@@thisissupposedtobeanonymous that attempt at a joke just came across as person displaying a painfully obvious sign of complete ignorance to humor, and a slight taste of politics. Even if I’m entirely wrong, you still shot the bed on this one.
Why is it shocking? He said that time travel into the future is possible, and then there was something else on the screen, but I don't remember what it was.
I admire his way he explains this. One of the first times I've read about this with an attempt to actually understand it I did it in my own language, for simplisity sake. But I think that Brian Cox' power for us to understand this is that he gives us visualisation to understand what he wants to teach us. That and his humor simply made me laugh. :)
If the observer and time traveler used mechanical watches their time would be the same even if one traveled across the universe and back. If light is a measurement of time then Earth is traveling in the future of stars planets and galaxies in the past before time and the universe existed :-). If the images you see in the universe were really in Earth's past, you wouldn't be able to see them because the the past no longer exists. Light and images cannot travel for 13.8 billion years (into the future:-) without a power source, when energy stops the lights go out. Einstein was either an imbecile or fraud lol. I don't understand how people can be this stupid :-). As you gaze at our creators universe, realize it's not a figment of your imagination. The stars planets and galaxies you see with your eyes are in real time. not a past dimension of Einstein space-time. Radio waves travel at 186,000 mi./s (half the speed of light) as each particle must charge the next particle in space. Einstein conflated the speed of particle radio waves with bipolar light waves that travel 186,000 mi./s in each/all directions instantaneously. The speed of light is instantaneous-bipolar light waves travel 186,000 mi./s in each direction. 186,000 minus 186,000 = 0 duh. Any attempt to measure the speed of light inside a glass vacuum tube would create light shattering (interference) thus breaking its state of superposition limiting its speed. So electrons eject instantaneously off metal from light, but the speed of light by itself is limited to only 186,000 mi./s :-). Either metal is acting as a light turbocharger or the speed of light is wrong duh. Using optical clocks and lasers to prove Einstein's time dilation-space-time curvature is like using a metal detector to find gold at Fort Knox. The closer you are to the electromagnetic fields, mass and gravity of the earth the more light bends aka gravitational lensing. The center of the sun is not the gravitational center of solar systems, neither are the center of black holes or galaxies the gravitational center for stars. If the moons gravitational force were pulling on Earth's oceans creating Tidal bulges the moon would have eventually crashed into the earth. Tidal bulges are caused from a reduced gravity-density on the Earth, just the reverse. The Magnetron gravity model explains why planets must orbit in a flat plane around their suns-stars. The image of the molecule illustrates how the gravity of the ether is both a pulling and repelling force. In space astronauts can overcome zero gravity with centrifugal forces of kinetic energy, density against the ether. At the center of the earth gravity is near zero so obviously gravity is an external repelling force (a centrifugal deceleration, density against gravity (the ether). The Earth like all mass is density against the ether (gravity of space).
Einstein removed the ether medium (coordinates of objects in space) replacing real gravity with mathematical gravitational wave clocks that defy the laws of physics. This magic trick allows projectile particle photons with mass to travel at the speed of light through nonexistent near zero gravity waves in space. Einstein was either an imbecile or a fraud. The Magnetron gravity model debunks Einstein's Relativity, Quantum Mechanics, space-time, Big Bang, black holes, and our current understanding of celestial mechanics illustrating how light travels instantaneously in all directions independent of time, space and gravity. Magnetron When the wrong understanding of a natural phenomenon exists wild and erroneous theoretical suppositions are made. Einstein is wrong, "time and space or fabric of spacetime is a non-physical mathematical model with no physical realities. Time cannot be magnified with a telescope nor stretched with a nonphysical hypothetical fabric of space. The emptiness of space is not a material body or fantasy union that can join space and time together and stretched like a rubber band. Particles are not telepathically connected :-) Explain how you can see and feel the infrared warmth of the Sun coming up on Earths horizon when light-speed (Einstein's space-time) tells us the Sun is supposedly 8 minutes and 20 seconds in a past dimension of space-time. The planet Mars is supposedly 20 minutes in a past dimension of space-time as well, yet this planet can be clearly seen coming up on Earths horizon. Are we to believe our eyes are playing tricks on us and the planet Mars is not really there? If light and gravity slowed or stretched its energy and distance would decrease, thereby violating the law of conservation of energy as more potential energy would be required :-) so the speed of light and gravity is instantaneous and cannot travel slower than it does. That's the law of physics, live with it. A light wave can travel in superposition instantaneously in all directions whereas the wrongly theorized Einstein's hypothetical projectile particle photons simply cannot. Using the electromagnetic wave as its carrier the speed of light oscillates instantaneously in both directions which explains the probabilistic nature of quantum mechanical phenomena in the double slit experiment. Either Einstein was an imbecile or fraud. Attention Einstein's disciples: explain how time dilation can stretch light without stretching images in space. Newsflash, projectile particle photons have no DCU TV/monitor geometry conversion circuits. Our universe resides in a nonphysical medium of nothingness, if you were able to stretch it like Silly Putty the images of galaxies planets and stars would be stretched as well but would violate the laws of conservation of energy 🙂. Time and space are independent of each other, the speed of gravity and/or gravitational waves as predicted by general relativity is equal to the speed of light at 186,000 mi./s. Last I heard gravity is near zero in space. According to Einstein's relativity the zero gravity of space-time in space exerts a gravitational force-pushing us down, pay no attention that the same space-time on the bottom of the earth is pushing us up with the same near zero gravitational force. Einstein gets a Nobel Prize for the photoelectric effect while telling us the speed of light is constant at 186,000 mi./s, if that were true photoelectrons couldn't eject (instantaneously) off metal since electrons have mass and would be slowed by Einstein's principles of gravity. Einstein removed the ether medium (coordinates of objects in space) and replaced it with mathematical gravitational wave clocks. Newsflash, near zero gravity in space cannot be converted to real gravity using mathematics :-) ruclips.net/video/0cjBdTwF6v8/видео.html via @RUclips
@Brian Sherwin What are you babbling about? Are you sure that Pedro isn't "Lord of all"? How about Manolo? Maybe Miguel... For a religitard to say that Evolution has no evidence or scientific veracity, is like a preacher saying there is a god. In other words, it's a rank lie, with the intention of manipulating people so that they can be controlled. Take your religion somewhere else, and don't foist it on those of us who are scientifically-literate and intellectually superior. We're too smart to fall for the "invisible magic man in the sky" trick.
AdomkXG Time travel is absolutely useless. It is just a fantasy dream made up by sci fi authors. Is it possible? Yes. Is it relevant? Absolutely not. Any intelligent species would realize that time travel is in fact a huge “waste” of time. Just stepping on a blade of grass the wrong way in a past time warp could result in an extinction of an entire galaxy. Not that it definitely would, but it could. There is a Russian game that exemplifies this outcome, it’s called Russian roulette. In fact even talking about the future in a past reality will actually alter that realities future, just talking about it. Time is fluid, constantly changing, the present is the only way to ensure a longevity of existence. Time travel isn’t interesting, and is more dangerous than eating a nuclear missile with your bare hands.
This fella is the business. So down to earth, yet so hyper intelligent and humble. He would be the person I would most like to have a conversation with in the world.
Did you have the sound on? Or was it just Silence?
10 лет назад+25
The full show that this clip is from should be posted for all to view, it even had Matt Smith and Brian Cox chatting crazy stuffs at the start. Also some celebs during the different parts of the show. Fun, entertaining, interesting and educational.
This was experimentally validated using very accurate atomic clocks around the middle of last century. Three clocks were used: 1 stationary, and 2 were put onto jet aircraft and flown around the world at high speed, in opposite directions. When the 2 clocks from the aircraft were put with the stationary clock, slightly less time had passed for those 2 clocks that had been on the aircraft.
@@richwills2322 - no - those three clocks were atomic clocks that based their calculation of passing time on the known decay rate of atomic nuclei, not on swinging pendulums or rotating gears.
@@pauligrossinoz Tell me then, why are astronaut's who spend a year in space traveling around the planet at 25 times the speed of that experiment still living in the same time as us? Shouldn't they be at least 10-15 seconds ahead or behind everyone else after that long and those speeds in space if you can travel forward or backwards just on an airplane. How about they show us someone who's traveling in space and predicts the winning lottery numbers 5 seconds before the drawing because they already heard the results, or who answers a written question before it's asked? That would be proof. Not a guy being pulled across a stage with a light bulb.
@@richwills2322 - *what?* _Are you serious?_ Do you even have the slightest comprehension of what you are talking about??? If somebody has aged a few seconds longer that everybody else, then tell me what would you expect to see? Frankly, you couldn't ever tell if somebody has aged just a few seconds. Try this: Take two photos of yourself, with a 10 second delay between the images. Now, besides the timestamps of the images, how could you tell that you were 10 seconds older in the second image? You can't tell!
@@pauligrossinoz He didn't say they aged, he said they time traveled. So based on that they were either moving forward or backwards in time! And based on your statement of time passing differently flying high speed on a plane around the planet, by flying extremely high speed on the space station for 6-12 months, the astronauts should either be forward or backwards in time compared to us if that worked. Just gobbly gook theories that they know you can't disprove!
So technically we can send ourselves up in pods for say 50 years and, while we'll be crippled old men by then, the earth would be hundreds of years older.
Am simply blown away by this explanation. And as always, the most complicated things have the simplest of solutions. No wonder he's the Rockstar of Physics. Wish I could sit at his feet and learn from him on a daily basis.
Time is a tool to measure the length of an event. Time is defined in seconds, hours, years. Time is not an object, It doesnt have atoms, therefore its not malleable. Time is a concept. Saying that time is bendable and transversable, is like saying that we could go back, through and forth in inches and kilograms. Whats discussed here is personal time perception in relation to relativity.
Relativity is all about how you see things or perspective. Say you take two points and cross over at high speed you see distance small. Similarly when you move slow you see wide gaps between the points. So distance depends on framework. And frame work depends on matter. Sometimes the matter seems to be the other way crossed. Time travel is a matter component requirement.
If the stars, moon planets and galaxies are in Earth's past then the Earth would be space traveling in the future. If the images you see in the universe were really in Earth's past, you wouldn't be able to see them because the the past no longer exists. Light and images cannot travel for 13.8 billion years into the future without a power source, when energy stops the lights go out, I don't understand how people can be this stupid :-). As you gaze at our creators universe, realize it's not a figment of your imagination. The stars planets and galaxies you see with your eyes are in real time. not a past dimension of Einstein space-time. Radio waves travel at 186,000 mi./s (half the speed of light) as each particle must charge the next particle in space. Einstein conflated the speed of particle radio waves with bipolar light waves that travel 186,000 mi./s in each/all directions instantaneously. The speed of light is instantaneous-bipolar light waves travel 186,000 mi./s in each direction. 186,000 minus 186,000 = 0 duh. Any attempt to measure the speed of light inside a glass vacuum tube would create light shattering (interference) thus breaking its state of superposition limiting its speed. So electrons eject instantaneously off metal from light, but the speed of light by itself is limited to only 186,000 mi./s :-). Either metal is acting as a light turbocharger or the speed of light is wrong duh. The center of the sun is not the gravitational center of solar systems, neither are the center of black holes or galaxies the gravitational center for stars. If the moons gravitational force were pulling on Earth's oceans creating Tidal bulges the moon would have eventually crashed into the earth. Tidal bulges are caused from a reduced gravity-density on the Earth, just the reverse. The Magnetron gravity model explains why planets must orbit in a flat plane around their suns-stars. The image of the molecule illustrates how the gravity of the ether is both a pulling and repelling force. In space astronauts can overcome zero gravity with centrifugal forces of kinetic energy, density against the ether. At the center of the earth gravity is near zero so obviously gravity is an external repelling force (a centrifugal deceleration, density against gravity (the ether). The Earth like all mass is density against the ether (gravity of space).
Einstein removed the ether medium (coordinates of objects in space) replacing real gravity with mathematical gravitational wave clocks that defy the laws of physics. This magic trick allows projectile particle photons with mass to travel at the speed of light through nonexistent near zero gravity waves in space. Einstein was either an imbecile or a fraud. The Magnetron gravity model debunks Einstein's Relativity, Quantum Mechanics, space-time, Big Bang, black holes, and our current understanding of celestial mechanics illustrating how light travels instantaneously in all directions independent of time, space and gravity. Magnetron When the wrong understanding of a natural phenomenon exists wild and erroneous theoretical suppositions are made. Einstein is wrong, "time and space or fabric of spacetime is a non-physical mathematical model with no physical realities. Time cannot be magnified with a telescope nor stretched with a nonphysical hypothetical fabric of space. The emptiness of space is not a material body or fantasy union that can join space and time together and stretched like a rubber band. Particles are not telepathically connected :-) Explain how you can see and feel the infrared warmth of the Sun coming up on Earths horizon when light-speed (Einstein's space-time) tells us the Sun is supposedly 8 minutes and 20 seconds in a past dimension of space-time. The planet Mars is supposedly 20 minutes in a past dimension of space-time as well, yet this planet can be clearly seen coming up on Earths horizon. Are we to believe our eyes are playing tricks on us and the planet Mars is not really there? If light and gravity slowed or stretched its energy and distance would decrease, thereby violating the law of conservation of energy as more potential energy would be required :-) so the speed of light and gravity is instantaneous and cannot travel slower than it does. That's the law of physics, live with it. A light wave can travel in superposition instantaneously in all directions whereas the wrongly theorized Einstein's hypothetical projectile particle photons simply cannot. Using the electromagnetic wave as its carrier the speed of light oscillates instantaneously in both directions which explains the probabilistic nature of quantum mechanical phenomena in the double slit experiment. Either Einstein was an imbecile or fraud. Attention Einstein's disciples: explain how time dilation can stretch light without stretching images in space. Newsflash, projectile particle photons have no DCU TV/monitor geometry conversion circuits. Our universe resides in a nonphysical medium of nothingness, if you were able to stretch it like Silly Putty the images of galaxies planets and stars would be stretched as well but would violate the laws of conservation of energy 🙂. Time and space are independent of each other, the speed of gravity and/or gravitational waves as predicted by general relativity is equal to the speed of light at 186,000 mi./s. Last I heard gravity is near zero in space. According to Einstein's relativity the zero gravity of space-time in space exerts a gravitational force-pushing us down, pay no attention that the same space-time on the bottom of the earth is pushing us up with the same near zero gravitational force. Einstein gets a Nobel Prize for the photoelectric effect while telling us the speed of light is constant at 186,000 mi./s, if that were true photoelectrons couldn't eject (instantaneously) off metal since electrons have mass and would be slowed by Einstein's principles of gravity. If space was curved-warped gravitational waves would throw planets out of orbit, altering time as galaxies and planets ascend and descend gravity waves, cause gravitational lensing distorting, stretching and warping images in the Hubble and James Webb telescopes. Gravity expanding at the speed of light would make gravitational waves scientifically impossible! If light and gravity stretched, its energy and distance would decrease, thereby violating the law of conservation of energy. Explain how the speed of light can be measured traveling through a medium of nothingness. The fabric of spacetime is a non-physical mathematical model with no physical realities. Time cannot be magnified with a telescope nor stretched with a nonphysical hypothetical fabric of space-time. Einstein removed the ether (coordinates between objects in space) so you wouldn't notice all the stars, planets and galaxies would have to be moved ahead in time for relativity to work 🙂. Newsflash, space is not empty. According to physics if two mechanical watches were synchronized on earth and one traveled across the universe and back, there would be no difference in time between the mechanical watches proving the speed of light is instantaneous as the only way a mechanical watch will run slow is if you tighten the main spring :-). Using optical clocks and lasers to prove Einstein's time dilation-space-time curvature is like using a metal detector to find gold at Fort Knox. The closer you are to the electromagnetic fields, mass and gravity of the earth the more light bends aka gravitational lensing. Einstein removed the ether medium (coordinates of objects in space) and replaced it with mathematical gravitational wave clocks. Newsflash, near zero gravity in space cannot be converted to real gravity using mathematics :-) ruclips.net/video/0cjBdTwF6v8/видео.html via @RUclips
What Brian doesnt mention, is that time dilation also occurs near tremendous amounts of gravity, like a black hole. Time slows for the observer the closer they travel to the event horizon of a black hole.
@@stevehughes8027 Movement isnt required near massive amounts of gravity. You and I could both be standing still. If I'm closer to this massive amount of gravity, time is moving slower for me. Or faster for you.
@@stevehughes8027 Exactly. Immense gravity can bend space time/light. Light moves so fast, it is basically time. Yet, light does not experience, or is not affected, by time. That's how Einstein first thought about his theory of relativity. He was traveling on a train past a clock tower. A glare came off the tower and was shining into his eyes. It was like 10:30 or whatever. Einstein theorized that the ray of light that blinded him in that moment is always 10:30 light. No matter how far that ray of light travels, it is always carrying the information from exactly 10:30. Pretty cool.
@@stevehughes8027 Hence why we can see the light shining from stars that blew up millions of years ago. It's like viewing information from the distant past.
He is one of those scientist characters you go to when you find out you have time control powers and he'll be all attached to your abilities and test you and stuff.
No, time is a constant , it’s irrelevant at what speed something is traveling at in relation to time . The only respective in this experiment is the perception from different locations , however the movement of light is still the same even when two people see it differently from perspective . The actual movement and time it takes is not different it’s only perceived to be different . Time travel is not possible and only exists in complicated hypotheses .
Time dilation has no significance for time travel in physical plane. It actually indicates the depth of space-time while observation made on speed of light is a projection at the surface. And time dilation said to be due to gravitation is also not true, it indicates the difference in levels of crests and troughs along the surface of space-time. Have published "New study of Gravitation and Fundamental theory of Singularity" [Volme 10; issue 03,04; 2023] - ARC JOURNALS - International journal of advanced research in physical science - Open access for free download. Series of papers (totally - 9 nos.) on ""Theory of Singularity" - The new study hope to serve one fundamental for general relativity and quantum mechanics... 1) New representation of Gravitation 2) Structure of black holes 3) Finite structure of space-time. 4) Real dimensions of space-time 5) Singularity 6) Source of dark energy...etc FYI, thanks.
I have a good question. Let's say you have two entangled electrons moving at about 2,200 kilometers per second. Now you put tone on earth and the other a travel around the sun and back on a space ship. Physics shows time pasees differently on both earth and the spaceship. If the electrons are constantly entangled, how does that affect the speed of electron, and which one if not both have been effected?
I have a dispute with this. This only considers the degradation & atrophy of objects (ie. a watch ticking faster would grind its gears relatively more than a watch ticking slightly slower, keeping it pristine for longer). This does not consider the overall prospect of the state of the universe. Since time travel itself requires the entire universe to shrink back to its former state, we can conclude time travel backwards is impossible. If the entire universe moved at a quicker pace relative to (?), then according to the laws of relativity, everything inside the universe would observe no change at all. Now for the hypothetical part: Let's say we somehow learn to localize the universe's changing states so everything around it keeps expanding but there's a 'bubble' where everything changes in reverse. Even in that state, we would somehow have to figure out how to maintain the 'x,y,z' co-ordinates of the person travelling backwards. Planets move quickly, and a millisecond of a person travelling backwards will put them into deep space. There are reasons why it's not just hard, but impossible. The universe wants to keep expanding and it has laws in place to prevent anything from preventing its ultimate goal. I have a hypothesis, so please don't take this as fact because I haven't tested it: There is a limited amount of energy in the universe. It's neither created nor destroyed, but there's a limited amount. All the energy in the universe is not enough to reverse the state of the universe itself. The best we can do is to change states slower. We can never reverse states in this universe. Even if we get the universe to shrink instead of expand, we will observe time as moving 'forward'.
I believe that if you tried to travel back in time, you would collide with an earlier version of yourself, and you would either be stopped or destroyed. It would be like driving on a single- lane highway with bumper-to-bumper traffic behind you, which reperesent yourself as you traveled forward through time, at the normal rate of one second per second. If you tried to put your car in reverse, the cars behind you would crash into you, causing a cataclysmic event. You might be able to travel forward in time at a slower rate relative to everything else, but the past is inaccessible. Maybe information could be sent, but not matter.
i agree. time in fact time can be slow down. but we never would be able travel to going back. because in fact. time is always moving. it never would stop. it only can slow down. we probably could make it slow as it possible. because at this rate. we only chasing it. but not beating it in a race. we only could equalize the time by 0,00000001 per second because I think if we might to try to circling the earth which is round. i mean circling the earth with the same place to the same place destination. at the speed that keep increasing. i don't actually know if this would work. but maybe, just maybe we could slower the time until it reach 0,000001 per second. lol and I guess. at that time. we have literally stop the time
SHUT THE F UP with your fking ' you can't go back in time and ' your ' you can't change the past ' loving pure bullsht. So what you want me to do, sit here and smile and say things like ' hahaha there's no turning back '? No laws show that you can't go back in time and i will not ever agree with you and you time bastards and fk all of you and time.
@@WerchAlcmena SHUT THE F UP with your fking ' you can't go back in time and ' your ' you can't change the past ' loving pure bullsht. So what you want me to do, sit here and smile and say things like ' hahaha there's no turning back '? No laws show that you can't go back in time and i will not ever agree with you and you time bastards and fk all of you and time.
@@mikes4135 Marches on my ass. Why the f would somoene want time travel to be impossible or just like telling that you can't go back in time like it would be a good thing? There is more than just saying ' hahaha, there's no turning back '. Not listening, not agreeing and most importantly, fk all of you.
Astral projected from the realm of WE, to find that there was a huge riff in the timelines. Due to cerns hydro collider bringing forth what We are now calling earths great Shift . Thus earths been sucked into a black hole with no cordinance in sight. Its was either this or let astroid aumanomu destroy earth. Wait, that means I'd be stuck here, this timeline as well.. Could be worse, we could all of become non existent/extinct and don't know it . .yet?!! 😅😅 Gotcha 😉✌🖖
When I was around 6 years old I noticed that when I hung out with my friends time went by quickly but when I studied it was long and boring. I had a thought. What if i focused my brain on slowing time in my head when I was playing with my friends, Like this I can have fun for a longer period. As absurd as this sounds I can now trick my brain to feel time go slower when I have fun but go faster when I’m bored. I hope someone out there feels like me so that I don’t feel like I’m talking out of my butt. I’m now 37. I sometimes feel like I’m coo coo.
For the very first time I understand that moving and stationery clock thing, He is the true master when it comes to teach, ai wish all my professors were like him when I was in school.
What is even more interetsing is that we can go beyond the claim that 'time is personal' to the greater claim that 'time is localised in our bodies'. In other words, different parts of your body are moving through time at different rates of speed! Your arm which is moving is travelling at a different speed to the one that is stationery. Your head, which is higher and subject to lower levels of gravity, is moving at a different speed to your feet which are lower and subject to greater gravity. Jim wasn't only moving in time at a different speed to the audeince but he was moving at a different speed to HIMSELF! If that doesn't blow your mind then I'm not sure what will.
@@ashfauzzamanaronno6606 I simply applied to our bodies what science claims. Gravity and velocity are the two factors which affect the speed of time and neither are uniformly spread around the body.
Can't go back in time, I'm afraid. But don't worry, you may be among the 5% of for who making it past 2030 has been planned. Mind you, you need to be mightily rich to be a part of the plan. The virus plot failed. Now they are driving us into a planned economic collapse, so we'll die from poverty. I would have preferred to just die from that failed virus.
I know I'm late to the party on this, but feel I have something to add here. Time travel is not only possible, it is inevitable.. You see, both my parents were time travellers. I was born a time traveller. In all our combined existences, the only thing we couldn't do was move backwards through time. My parents gave up time travel at different points, my father first, my mother a couple of years ago, but I still travel on. Always forward, not stopping, at the rate of one second per second. One day I will stop, and get lost to those that travel on still. Until then, I am a time traveller.
Jim, when asked if he'd like to fly in a rocket as a bazillion miles per hour: "Absolutely" Jim, 1 minute previously: "Can you stop this cart moving incredibly slowly? I'm going to hurl"
@@syedjafferimam5789 phew, since it has been a long time I thought you might not be able to recall, can you text me on WhatsApp on the number I have above coz it’s hard to talk here , quite public lol
Something that was not brought up was the fact that the astronaut's frame of reference can't be inertial if he's leaving earth and returning to earth. He has to accelerate away from earth, and then back towards earth, and from his perspective he sees gravitational fields which affect the passage of time at different points. If the astronaut was in an inertial frame during the whole trip (which is impossible by the way), he would see earth age more slowly than him, but earth would also see him age more slowly than earth. This is because you can put the origin of the frame of reference either on the astronaut or on the earth, and make either of the objects stationary if both frames of reference are inertial. When it comes down to it, if you had a clock on earth, and the astronaut had a clock, and you set both of them to 0 at the moment the astronaut left the earth, then if the astronaut's frame of reference were inertial during the whole trip, he would expect his clock to be ahead of earth's clock. Earth would feel stationary too, and expect the astronaut to age less, so earth would expect its clock to be ahead of the astronaut's clock. Both clocks can't be ahead of each other. If earth's clock read 5, it would predict the astronaut's clock be T where T5. That means 5
Danner you're not stupid. It is great to be curious, mate! This is because time is not absolute! Time is not independent, i.e, time cannot be same for everything moving at different velocities, no matter how minute the differences are. But time differences for earthly velocities are negligible due to their magnitude. However, when you approach the speed of light, the time dilation does becomes more profound. This is what the Theories of relativity (SR and GR) were about. Everything is relative. The faster you travel, the slower will be the time for you! Same for Gravitational pull. The stronger the gravitational pull- slower the time.
Mind blown! Even more fantastic is that we could see into the distant past but only if we could travel much faster than the speed of light. Travel in an instant to a far away planet say 65 million light years away, set up a ridiculously powerful telescope and look through it back at Earth. You would be witnessing Earth as it was when the Dinosaurs roamed!
I don't think I really understand the explanation fully yet, but what might be a tangent, or what he's saying partly, or what commenters are saying...is time is an earth bias, so we project it on the universe....but if an astronaut slummed it in space for a year, letting earth round sun, then come back....yeah that'd be a year for earth, but the astronaut abstained from our time. So it's something with not outpacing light, but being lapped to go back, and to go forward, you reverse engineer future in passed. Or stay somewhat ahead of Earth's rotation. think his explanation is actual science though and I'm imposing on it.
Brian Cox cites the effect of time dilation as evidence of the ability to travel in time. A man returning to Earth after travelling at near light speed through will indeed be biologically younger than his twin brother on Earth but it is a non sequitur to conclude from this that he has travelled in time. To begin although time has been characterised as a dimension it is solely a human notion (best thought of as an imaginary interval between events) and you cannot travel through a human notion. The observable effects of travelling at speed relative to the Earth are that at the lowest level the amount of quantum events decreases and this affects everything in the inertial frame of reference such that for example clocks run slower, people age more slowly and tea takes longer to cool down .
@Metallisika the distance traveled was not greater, the distance was objectively the same. A sideways force and a vertical force such as is applied in this case, can be measured, and its effects on the light bulb predicted. Jim might only perceive the independent motion of the light, but the absolute sideways motion from the force applied to the chair results in the changing starting position of the vertical independent motion. In otherwords, as Jim moves up and down the bulb with his hand, the starting position of the ball continually changes, and this accounts for the triangular zigzag motion. The bulb does not travel greater for anyone. The two separate motions I have described must be separated.
@Metallisika yes agreed, you cant add these motions together, thats why I said you need to separate them. But theory of relativity assumes you have to add different motions together and that light is the one exception. The distance is not increasing for any photon depending on the observer, the photon travels its own independent distance at all times. The atom travels faster so nothing surprising there that they last longer.
It’s definitely possible with time dilation. Think of the movie interstellar. If one were to go to a planet that’s affected by the gravitational field of a black hole or something similar, time on that planet could be moving significantly slower than time here on Earth. In the movie, an hour on the planet that was affected by the black hole would equate to 7 years on Earth. If one were to purposely stay on this planet for a day or so, they would essentially be traveling to the future. When they get back to Earth, they would be around 200 years into the future!
Except you would be fried by radiation if you ever got that close to a black hole. Don't believe everything you see in "the movies". In Star Wars, the planet Coruscant was set in the centre of the galaxy. In the centre of all galaxies exist massive black holes. It's an uninhabitable zone. Go figure!
@@PreservationEnthusiast in todays world im sure they have a way to protect them from radiation by a simple suit that any normal person has no knowledge about
@@SeanOliver5981 There's no need to get involved with conspiracy theory. If we had the technology for interplanetary travel in reasonable time period, which clearly we don't, all kinds of other problems would have been solved. For example nuclear fusion, where we would have almost unlimited free energy. Instead of the archaic processes of burning fossil fuels and destroying the planet with global warming.
I believe the basis of this is that speed of light emains same, but isnt the speed with which the chair is being moved gets added to the speed of light and thus makes time same for both
+Jeff The Ripper Technically time travel because your personal perception of time is in fact also seen in the physical effect of time on your body and mind so you would be living in a body from a different time to everything else. In that sense though, everyone has time travelled to some micro-cosmic extent.
ah but we witnessed the oscillation of the light clock, even though he travelled, to ours and his perspective, the tempo of the oscillation was constant, yet the light travelled a longer path, so that would mean they increased the speed of light, as it travelled a longer distance but in the same amount of time. boooooom
but he knows he is travelling faster than we are. Ignore light, lets say it was a ball being bounced on the floor, and you bounce the same ball on a train, to both perspectives the ball is bouncing the same, yet the ball of the train, because of its difference in directional travel, the ball on the train is moving faster, as the train is carrying it. We know we can slow down light, as we know its moves slower in our atmosphere than in space, surely there are circumstances where light travels faster, we just are unable to measure it. Black holes for example.
question: he asked the audience to evaluate the path of light and the time it took versus Jim's evaluation of light and the path it took from his perspective> Was the amount of 'time' hinged to vision of light? i.e What if Jim and the audience had their eyes closed the entire time? Does Jim still travel into the future? Or only travel into the future when he opens his eyes?
Talk about completely missing the mechanics. It has nothing to do with 'the light' at all. "Light" has a fixed speed (speed = distance divided by time) relative to everything else. His 'lightbulb' at "Light" speed has to travel further than ours, but again, it has a fixed speed, so it will not be able to increase the average speed like a car would achieve that, so it has to slow down time. "Light" is a constant; Time is not. Maybe try watching it again without confusing lightbulb with speed of light.
This is so facinating, however start to question myself how it would look like doing two experiments at the same time one from the static perspective (as now) but also the other way around from the dynamic perspective? Wouldn’t you come to the same conclusion?
Basically whoever whoever fly into space at almost the speed of light for 10 years and comes back to Earth, he would have gone into space for like 20 or so years in earth's time which is our time clock.
As Prof. Cox explains here, time is relative because it moves differently for the objects with different speeds. The speed of light is constant and it also is faster than anything else. As your speed grows, it gets closer to the speed of light. When it is so close to it, time slows for you. Therefore you would travel to future. If your speed is equal to that of light, time stops for you. However, you probably cannot make it with your material existence because light is kind of an energy and you too need to turn into energy in order to be as fast as light. Last but not least, when you move faster than light, you would theoretically travel to past, which is out of any possibilities because as I wrote above, speed of light is faster than every other speed. Is it simple enough to begin with?
No you're just fine. This is all hogwash. Basically, what they are trying to tell you is light and time travel at the same speed or very close. So if you can somehow travel at the same speed as light, you are essentially traveling at the same speed as time. So imagine being in a car on the highway and a car next to you is traveling at the same speed. It will appear as if the car is standing still but the environment around you is moving fast. So since you are traveling at the speed of light, you will be in sync with time and time stands still. If you really try to think about it, it sounds just as silly as saying the earth is flat. Time is not metaphysical, it doesn't have attributes or traits. It is just a way we try to measure the way things change from moment to moment. Everything is always changing and if we want to find a way to document how long it takes something to change, we have to find a point of reference in which we measure what we call time. Our point of reference is the earth. We try to measure time by how long it takes the earth to rotate and go around the sun. The time we use is not perfect in calculating that because the earths orbit and rotation is not perfectly in sync with our 24 hour clock so we have leap year every 4 years to correct it. Time as it relates to the universe and everything is a constant. If time is not a constant, then time is inaccurate. Our time on earth is inaccurate as it relates to the universe because we keep resetting it every 4 years. It is good that we do because it helps us prepare for the seasons here on earth. If we didn't reset the time, the seasons would start shifting to different months. Over time, Fall would be in December and winter would be in March. No one truly have the means to measure time accurately because we do not have the universal point of reference. This will probably blow your mind but I don't think there is a point of reference by which we could measure time from a universal standpoint. We can generalize by comparing how long it takes the earth to go around the sun to the movement of the stars but it wouldn't be accurate in the long run by a long shot. If there is no reference by which we measure time, then time does not exist. Which would mean the only thing that does exist is eternity. However in our existence, time exist for us living beings because we have a beginning and an end.
It may be possible to travel forward in time, but if traveling back in time were possible, wouldn't someone from the future have already come back to visit us by now?
I was familiar with the idea that time moves more slowly for a moving clock and was familiar with Einstein's "twin paradox" that Prof. Cox alluded to, but I never really understood why until this video.
Well traveling a significant fraction of the speed of light, time dilation could mimic time travel. I spend 1 year in space and 50 years could pass on Earth.
What do we want??
TIME TRAVEL!!!
When do we want it??
IRRELEVANT!!!!
Well played =)
14 years ago?
Brilliant
14 years ago are you still alive
Wait I’m stupid nvm
Absolutely brilliant how he can describe the most complex material so simply.
Let's hangout and give the time we have left, more life.
🩸🩸🩸
and when he returned after 10 years and was now 2050 he still had to quarantine for 10 days
1) He returned in 2042.
2) No, he very likely wouldn't have to.
Maybe he should stay out a few minutes longer and come back 10 days later still, hey presto, no need to quarantine
@@thisissupposedtobeanonymous that attempt at a joke just came across as person displaying a painfully obvious sign of complete ignorance to humor, and a slight taste of politics. Even if I’m entirely wrong, you still shot the bed on this one.
@@thisissupposedtobeanonymous What??. You're the most boring person on the planet :D
He would have to take 2 covid shot and 10 booster shots and there would still be mask and social distancing, including the QR code check in.
The bartender said "We don't serve time travellers here".
A time traveller walked into a bar...
Thomas M took me a while to get it. Too bad most people didn’t understand this joke ದ್ದದ
Noice
@@burcopresents predestination?
Predestination reference?
fizzle bomber
End of this video shocked me.!!!
what end?
yay, it scared me
Why is it shocking? He said that time travel into the future is possible, and then there was something else on the screen, but I don't remember what it was.
What end? The fact it's possible?
all videos uploaded by doctor who have an ending like that
I admire his way he explains this. One of the first times I've read about this with an attempt to actually understand it I did it in my own language, for simplisity sake. But I think that Brian Cox' power for us to understand this is that he gives us visualisation to understand what he wants to teach us.
That and his humor simply made me laugh. :)
If the observer and time traveler used mechanical watches their time would be the same even if one traveled across the universe and back. If light is a measurement of time then Earth is traveling in the future of stars planets and galaxies in the past before time and the universe existed :-). If the images you see in the universe were really in Earth's past, you wouldn't be able to see them because the the past no longer exists. Light and images cannot travel for 13.8 billion years (into the future:-) without a power source, when energy stops the lights go out. Einstein was either an imbecile or fraud lol. I don't understand how people can be this stupid :-).
As you gaze at our creators universe, realize it's not a figment of your imagination. The stars planets and galaxies you see with your eyes are in real time. not a past dimension of Einstein space-time.
Radio waves travel at 186,000 mi./s (half the speed of light) as each particle must charge the next particle in space. Einstein conflated the speed of particle radio waves with bipolar light waves that travel 186,000 mi./s in each/all directions instantaneously. The speed of light is instantaneous-bipolar light waves travel 186,000 mi./s in each direction. 186,000 minus 186,000 = 0 duh. Any attempt to measure the speed of light inside a glass vacuum tube would create light shattering (interference) thus breaking its state of superposition limiting its speed. So electrons eject instantaneously off metal from light, but the speed of light by itself is limited to only 186,000 mi./s :-). Either metal is acting as a light turbocharger or the speed of light is wrong duh.
Using optical clocks and lasers to prove Einstein's time dilation-space-time curvature is like using a metal detector to find gold at Fort Knox. The closer you are to the electromagnetic fields, mass and gravity of the earth the more light bends aka gravitational lensing.
The center of the sun is not the gravitational center of solar systems, neither are the center of black holes or galaxies the gravitational center for stars. If the moons gravitational force were pulling on Earth's oceans creating Tidal bulges the moon would have eventually crashed into the earth. Tidal bulges are caused from a reduced gravity-density on the Earth, just the reverse. The Magnetron gravity model explains why planets must orbit in a flat plane around their suns-stars.
The image of the molecule illustrates how the gravity of the ether is both a pulling and repelling force.
In space astronauts can overcome zero gravity with centrifugal forces of kinetic energy, density against the ether. At the center of the earth gravity is near zero so obviously gravity is an external repelling force (a centrifugal deceleration, density against gravity (the ether). The Earth like all mass is density against the ether (gravity of space).
Einstein removed the ether medium (coordinates of objects in space) replacing real gravity with mathematical gravitational wave clocks that defy the laws of physics. This magic trick allows projectile particle photons with mass to travel at the speed of light through nonexistent near zero gravity waves in space. Einstein was either an imbecile or a fraud.
The Magnetron gravity model debunks Einstein's Relativity, Quantum Mechanics, space-time, Big Bang, black holes, and our current understanding of celestial mechanics illustrating how light travels instantaneously in all directions independent of time, space and gravity. Magnetron
When the wrong understanding of a natural phenomenon exists wild and erroneous theoretical suppositions are made. Einstein is wrong, "time and space or fabric of spacetime is a non-physical mathematical model with no physical realities. Time cannot be magnified with a telescope nor stretched with a nonphysical hypothetical fabric of space. The emptiness of space is not a material body or fantasy union that can join space and time together and stretched like a rubber band. Particles are not telepathically connected :-) Explain how you can see and feel the infrared warmth of the Sun coming up on Earths horizon when light-speed (Einstein's space-time) tells us the Sun is supposedly 8 minutes and 20 seconds in a past dimension of space-time. The planet Mars is supposedly 20 minutes in a past dimension of space-time as well, yet this planet can be clearly seen coming up on Earths horizon. Are we to believe our eyes are playing tricks on us and the planet Mars is not really there? If light and gravity slowed or stretched its energy and distance would decrease, thereby violating the law of conservation of energy as more potential energy would be required :-) so the speed of light and gravity is instantaneous and cannot travel slower than it does. That's the law of physics, live with it. A light wave can travel in superposition instantaneously in all directions whereas the wrongly theorized Einstein's hypothetical projectile particle photons simply cannot. Using the electromagnetic wave as its carrier the speed of light oscillates instantaneously in both directions which explains the probabilistic nature of quantum mechanical phenomena in the double slit experiment. Either Einstein was an imbecile or fraud.
Attention Einstein's disciples: explain how time dilation can stretch light without stretching images in space. Newsflash, projectile particle photons have no DCU TV/monitor geometry conversion circuits. Our universe resides in a nonphysical medium of nothingness, if you were able to stretch it like Silly Putty the images of galaxies planets and stars would be stretched as well but would violate the laws of conservation of energy 🙂.
Time and space are independent of each other, the speed of gravity and/or gravitational waves as predicted by general relativity is equal to the speed of light at 186,000 mi./s. Last I heard gravity is near zero in space. According to Einstein's relativity the zero gravity of space-time in space exerts a gravitational force-pushing us down, pay no attention that the same space-time on the bottom of the earth is pushing us up with the same near zero gravitational force. Einstein gets a Nobel Prize for the photoelectric effect while telling us the speed of light is constant at 186,000 mi./s, if that were true photoelectrons couldn't eject (instantaneously) off metal since electrons have mass and would be slowed by Einstein's principles of gravity.
Einstein removed the ether medium (coordinates of objects in space) and replaced it with mathematical gravitational wave clocks. Newsflash, near zero gravity in space cannot be converted to real gravity using mathematics :-) ruclips.net/video/0cjBdTwF6v8/видео.html via @RUclips
Basically, if your going to time travel, wear a helmet.
Ali CG safety first.
Or a yellow vest.. :o)
*Impossible*
I like that the Doctor Who channel doesn't ask you to subscribe at the end.
That didn't age well
Same!
although I did feel some bloodlust at the end...weird
Plot Twist: Brian Cox is a time lord in real life.
***** it's a joke
AdomkXG Only Jesus is Lord of all.Cox claims to be Lord of evolution...Itself without either logic, evidence or scientific veracity.
@Brian Sherwin What are you babbling about? Are you sure that Pedro isn't "Lord of all"? How about Manolo? Maybe Miguel... For a religitard to say that Evolution has no evidence or scientific veracity, is like a preacher saying there is a god. In other words, it's a rank lie, with the intention of manipulating people so that they can be controlled.
Take your religion somewhere else, and don't foist it on those of us who are scientifically-literate and intellectually superior. We're too smart to fall for the "invisible magic man in the sky" trick.
AdomkXG Rubbish! He just loves the limelight on here and TV; instead of doing his job.
AdomkXG Time travel is absolutely useless. It is just a fantasy dream made up by sci fi authors. Is it possible? Yes. Is it relevant? Absolutely not. Any intelligent species would realize that time travel is in fact a huge “waste” of time. Just stepping on a blade of grass the wrong way in a past time warp could result in an extinction of an entire galaxy. Not that it definitely would, but it could. There is a Russian game that exemplifies this outcome, it’s called Russian roulette. In fact even talking about the future in a past reality will actually alter that realities future, just talking about it. Time is fluid, constantly changing, the present is the only way to ensure a longevity of existence. Time travel isn’t interesting, and is more dangerous than eating a nuclear missile with your bare hands.
This fella is the business. So down to earth, yet so hyper intelligent and humble. He would be the person I would most like to have a conversation with in the world.
same here, i would also saw off one leg to have a break with A.E.
And he was in the band D Ream.
Great demonstration of how time travel really is possible!
ruclips.net/video/PkKAHroBTtA/видео.html
It actually is possible by something called the occult
it isn’t possible. us humans won’t ever get there
Citrus people said that about getting to the moon
@@Hellothere_453 true but the moon was closer and by the way the world is heading seems like we’re gonna have to take care of personal problems first
It's weird. It's almost like I can't remember watching the last 7 seconds of this video no matter how many times I try.
I can't remember the very last second of this video.
-By the way, why have you posted the same comment 2.387.149 times in a row??
Did you have the sound on? Or was it just Silence?
The full show that this clip is from should be posted for all to view, it even had Matt Smith and Brian Cox chatting crazy stuffs at the start. Also some celebs during the different parts of the show. Fun, entertaining, interesting and educational.
Do you know where I can watch the full show?
"The Science of Doctor Who"
Just look for it and stream it or rent it.
No wonder when I go for a run it feels like the longest 10 minutes of my life
😂😂😂😂
Then why does sitting in class feels like the longest hour in my life?
You can't feel time dilation for yourself. Only others can see time slows down for you.
@@yukikomatsu2447 That's why my instructor tells me you just ran for a minute. I got it now :v
This was experimentally validated using very accurate atomic clocks around the middle of last century.
Three clocks were used: 1 stationary, and 2 were put onto jet aircraft and flown around the world at high speed, in opposite directions.
When the 2 clocks from the aircraft were put with the stationary clock, slightly less time had passed for those 2 clocks that had been on the aircraft.
All that proves is a man made mechanical device is affected by rapid movement.
@@richwills2322 - no - those three clocks were atomic clocks that based their calculation of passing time on the known decay rate of atomic nuclei, not on swinging pendulums or rotating gears.
@@pauligrossinoz Tell me then, why are astronaut's who spend a year in space traveling around the planet at 25 times the speed of that experiment still living in the same time as us? Shouldn't they be at least 10-15 seconds ahead or behind everyone else after that long and those speeds in space if you can travel forward or backwards just on an airplane. How about they show us someone who's traveling in space and predicts the winning lottery numbers 5 seconds before the drawing because they already heard the results, or who answers a written question before it's asked? That would be proof. Not a guy being pulled across a stage with a light bulb.
@@richwills2322 - *what?* _Are you serious?_
Do you even have the slightest comprehension of what you are talking about???
If somebody has aged a few seconds longer that everybody else, then tell me what would you expect to see?
Frankly, you couldn't ever tell if somebody has aged just a few seconds.
Try this:
Take two photos of yourself, with a 10 second delay between the images.
Now, besides the timestamps of the images, how could you tell that you were 10 seconds older in the second image?
You can't tell!
@@pauligrossinoz He didn't say they aged, he said they time traveled. So based on that they were either moving forward or backwards in time! And based on your statement of time passing differently flying high speed on a plane around the planet, by flying extremely high speed on the space station for 6-12 months, the astronauts should either be forward or backwards in time compared to us if that worked. Just gobbly gook theories that they know you can't disprove!
This is absolutely fantastic!!!! I never knew I'd understand a concept so easily
" TIME is not the boss of me."
The Doctor: The Time of the Angels' April 2010 =))
You can travel to the future, just wait three minutes ! Boom ! It's the future !
***** omg I tried it and it works!!!
***** Instructions unclear, only travelled 2 minutes into the future. 0/10
So technically we can send ourselves up in pods for say 50 years and, while we'll be crippled old men by then, the earth would be hundreds of years older.
Am simply blown away by this explanation. And as always, the most complicated things have the simplest of solutions. No wonder he's the Rockstar of Physics. Wish I could sit at his feet and learn from him on a daily basis.
Love Professor Brian Cox.. He's a National Treasure
Plus of course he made a cameo appearance in the Doctor Who episode "The Power of Three".
J May ?
And also he played one of the characters in An Adventure of Space and Time documentary released in 2013.
Kelly Davis Treasure? In that case, he should be REBURIED...A S A P!
Actually he is a bit of a prick typical BBC
Who’s watching this after watching a time-traveling movie and left him wondering if time travel is indeed possible?
Yep I watched 11.22.63 and 11/10 recommended
Close enough. I was thinking about the movie interstellar where time moves more slowly on the water planet. Then I remembered this gem of a video. 👌
I watched dark. They have cleared most of doubts but keep me search for more.
Time is a tool to measure the length of an event. Time is defined in seconds, hours, years. Time is not an object, It doesnt have atoms, therefore its not malleable. Time is a concept. Saying that time is bendable and transversable, is like saying that we could go back, through and forth in inches and kilograms. Whats discussed here is personal time perception in relation to relativity.
Finally ... someone who gets it.
(Thumbs up)
I love it when the RUclips scientists come out, claiming to know more than actual scientists.
I guess your definition of time is somewhat skewed. To physicists, "time" store the changes in space!
Your whole comment is pointless.
Yes bro
Mind boggling concept explained so well and in easy to understandable way, unbelievable- thank you
Best and clearest explanation on this I've ever heard, blown away. Amazing.
Relativity is all about how you see things or perspective. Say you take two points and cross over at high speed you see distance small. Similarly when you move slow you see wide gaps between the points. So distance depends on framework. And frame work depends on matter. Sometimes the matter seems to be the other way crossed. Time travel is a matter component requirement.
If the stars, moon planets and galaxies are in Earth's past then the Earth would be space traveling in the future. If the images you see in the universe were really in Earth's past, you wouldn't be able to see them because the the past no longer exists. Light and images cannot travel for 13.8 billion years into the future without a power source, when energy stops the lights go out, I don't understand how people can be this stupid :-).
As you gaze at our creators universe, realize it's not a figment of your imagination. The stars planets and galaxies you see with your eyes are in real time. not a past dimension of Einstein space-time.
Radio waves travel at 186,000 mi./s (half the speed of light) as each particle must charge the next particle in space. Einstein conflated the speed of particle radio waves with bipolar light waves that travel 186,000 mi./s in each/all directions instantaneously. The speed of light is instantaneous-bipolar light waves travel 186,000 mi./s in each direction. 186,000 minus 186,000 = 0 duh. Any attempt to measure the speed of light inside a glass vacuum tube would create light shattering (interference) thus breaking its state of superposition limiting its speed. So electrons eject instantaneously off metal from light, but the speed of light by itself is limited to only 186,000 mi./s :-). Either metal is acting as a light turbocharger or the speed of light is wrong duh.
The center of the sun is not the gravitational center of solar systems, neither are the center of black holes or galaxies the gravitational center for stars. If the moons gravitational force were pulling on Earth's oceans creating Tidal bulges the moon would have eventually crashed into the earth. Tidal bulges are caused from a reduced gravity-density on the Earth, just the reverse. The Magnetron gravity model explains why planets must orbit in a flat plane around their suns-stars.
The image of the molecule illustrates how the gravity of the ether is both a pulling and repelling force.
In space astronauts can overcome zero gravity with centrifugal forces of kinetic energy, density against the ether. At the center of the earth gravity is near zero so obviously gravity is an external repelling force (a centrifugal deceleration, density against gravity (the ether). The Earth like all mass is density against the ether (gravity of space).
Einstein removed the ether medium (coordinates of objects in space) replacing real gravity with mathematical gravitational wave clocks that defy the laws of physics. This magic trick allows projectile particle photons with mass to travel at the speed of light through nonexistent near zero gravity waves in space. Einstein was either an imbecile or a fraud.
The Magnetron gravity model debunks Einstein's Relativity, Quantum Mechanics, space-time, Big Bang, black holes, and our current understanding of celestial mechanics illustrating how light travels instantaneously in all directions independent of time, space and gravity. Magnetron
When the wrong understanding of a natural phenomenon exists wild and erroneous theoretical suppositions are made. Einstein is wrong, "time and space or fabric of spacetime is a non-physical mathematical model with no physical realities. Time cannot be magnified with a telescope nor stretched with a nonphysical hypothetical fabric of space. The emptiness of space is not a material body or fantasy union that can join space and time together and stretched like a rubber band. Particles are not telepathically connected :-) Explain how you can see and feel the infrared warmth of the Sun coming up on Earths horizon when light-speed (Einstein's space-time) tells us the Sun is supposedly 8 minutes and 20 seconds in a past dimension of space-time. The planet Mars is supposedly 20 minutes in a past dimension of space-time as well, yet this planet can be clearly seen coming up on Earths horizon. Are we to believe our eyes are playing tricks on us and the planet Mars is not really there? If light and gravity slowed or stretched its energy and distance would decrease, thereby violating the law of conservation of energy as more potential energy would be required :-) so the speed of light and gravity is instantaneous and cannot travel slower than it does. That's the law of physics, live with it. A light wave can travel in superposition instantaneously in all directions whereas the wrongly theorized Einstein's hypothetical projectile particle photons simply cannot. Using the electromagnetic wave as its carrier the speed of light oscillates instantaneously in both directions which explains the probabilistic nature of quantum mechanical phenomena in the double slit experiment. Either Einstein was an imbecile or fraud.
Attention Einstein's disciples: explain how time dilation can stretch light without stretching images in space. Newsflash, projectile particle photons have no DCU TV/monitor geometry conversion circuits. Our universe resides in a nonphysical medium of nothingness, if you were able to stretch it like Silly Putty the images of galaxies planets and stars would be stretched as well but would violate the laws of conservation of energy 🙂.
Time and space are independent of each other, the speed of gravity and/or gravitational waves as predicted by general relativity is equal to the speed of light at 186,000 mi./s. Last I heard gravity is near zero in space. According to Einstein's relativity the zero gravity of space-time in space exerts a gravitational force-pushing us down, pay no attention that the same space-time on the bottom of the earth is pushing us up with the same near zero gravitational force. Einstein gets a Nobel Prize for the photoelectric effect while telling us the speed of light is constant at 186,000 mi./s, if that were true photoelectrons couldn't eject (instantaneously) off metal since electrons have mass and would be slowed by Einstein's principles of gravity.
If space was curved-warped gravitational waves would throw planets out of orbit, altering time as galaxies and planets ascend and descend gravity waves, cause gravitational lensing distorting, stretching and warping images in the Hubble and James Webb telescopes. Gravity expanding at the speed of light would make gravitational waves scientifically impossible! If light and gravity stretched, its energy and distance would decrease, thereby violating the law of conservation of energy. Explain how the speed of light can be measured traveling through a medium of nothingness. The fabric of spacetime is a non-physical mathematical model with no physical realities. Time cannot be magnified with a telescope nor stretched with a nonphysical hypothetical fabric of space-time. Einstein removed the ether (coordinates between objects in space) so you wouldn't notice all the stars, planets and galaxies would have to be moved ahead in time for relativity to work 🙂. Newsflash, space is not empty. According to physics if two mechanical watches were synchronized on earth and one traveled across the universe and back, there would be no difference in time between the mechanical watches proving the speed of light is instantaneous as the only way a mechanical watch will run slow is if you tighten the main spring :-). Using optical clocks and lasers to prove Einstein's time dilation-space-time curvature is like using a metal detector to find gold at Fort Knox. The closer you are to the electromagnetic fields, mass and gravity of the earth the more light bends aka gravitational lensing.
Einstein removed the ether medium (coordinates of objects in space) and replaced it with mathematical gravitational wave clocks. Newsflash, near zero gravity in space cannot be converted to real gravity using mathematics :-) ruclips.net/video/0cjBdTwF6v8/видео.html via @RUclips
Would love to have him as an instructor. I love this stuff!
What Brian doesnt mention, is that time dilation also occurs near tremendous amounts of gravity, like a black hole. Time slows for the observer the closer they travel to the event horizon of a black hole.
The same principal though no? Movement vs observation?
@@stevehughes8027 Movement isnt required near massive amounts of gravity. You and I could both be standing still. If I'm closer to this massive amount of gravity, time is moving slower for me. Or faster for you.
@@faceman3585 is that to do with light/matter struggling to travel with the gravity or?
@@stevehughes8027 Exactly. Immense gravity can bend space time/light. Light moves so fast, it is basically time. Yet, light does not experience, or is not affected, by time. That's how Einstein first thought about his theory of relativity. He was traveling on a train past a clock tower. A glare came off the tower and was shining into his eyes. It was like 10:30 or whatever. Einstein theorized that the ray of light that blinded him in that moment is always 10:30 light. No matter how far that ray of light travels, it is always carrying the information from exactly 10:30. Pretty cool.
@@stevehughes8027 Hence why we can see the light shining from stars that blew up millions of years ago. It's like viewing information from the distant past.
He is one of those scientist characters you go to when you find out you have time control powers and he'll be all attached to your abilities and test you and stuff.
No, time is a constant , it’s irrelevant at what speed something is traveling at in relation to time . The only respective in this experiment is the perception from different locations , however the movement of light is still the same even when two people see it differently from perspective . The actual movement and time it takes is not different it’s only perceived to be different . Time travel is not possible and only exists in complicated hypotheses .
I feel like I had a tiny memory loss after watching the end.
Mohamed Gamil what end?
@formulagamer playz what silence
Einstein worked that out in his head, in his imagination. Amazing.
well, he did have an iq of 160
@@GabsTheGamerYT what 😅😂😂😂😂😂😂
It's also from doing tests an many observations
Time dilation has no significance for time travel in physical plane. It actually indicates the depth of space-time while observation made on speed of light is a projection at the surface. And time dilation said to be due to gravitation is also not true, it indicates the difference in levels of crests and troughs along the surface of space-time. Have published "New study of Gravitation and Fundamental theory of Singularity" [Volme 10; issue 03,04; 2023] - ARC JOURNALS - International journal of advanced research in physical science - Open access for free download.
Series of papers (totally - 9 nos.) on ""Theory of Singularity" - The new study hope to serve one fundamental for general relativity and quantum mechanics...
1) New representation of Gravitation
2) Structure of black holes
3) Finite structure of space-time.
4) Real dimensions of space-time
5) Singularity
6) Source of dark energy...etc
FYI, thanks.
Brian Cox has now given me hope for being a pro Time Traveller.
BimodalMetal6 he may be a little TOO ,scientific. ......That type of intellect though often brilliant, and focused, can also be narrow..
Thank you for that advice 👍🏾
Amazing. I just love Brian Cox and how he can explain science in way we can somewhat understand it.
How can you not love science. This stuff is amazing!
It is if you understand it, something I have trouble with sometimes lol
How can i love somoene who say that you can't go back in time? Fk them all, i don't want to go to the f future.
I have a good question. Let's say you have two entangled electrons moving at about 2,200 kilometers per second. Now you put tone on earth and the other a travel around the sun and back on a space ship. Physics shows time pasees differently on both earth and the spaceship. If the electrons are constantly entangled, how does that affect the speed of electron, and which one if not both have been effected?
love it!... every time we look at the stars or our sun we are observing the past in our present isn't the universe a wonderfully strange place :)
Lame, i want a true time travel.
I have a dispute with this.
This only considers the degradation & atrophy of objects (ie. a watch ticking faster would grind its gears relatively more than a watch ticking slightly slower, keeping it pristine for longer).
This does not consider the overall prospect of the state of the universe. Since time travel itself requires the entire universe to shrink back to its former state, we can conclude time travel backwards is impossible. If the entire universe moved at a quicker pace relative to (?), then according to the laws of relativity, everything inside the universe would observe no change at all.
Now for the hypothetical part:
Let's say we somehow learn to localize the universe's changing states so everything around it keeps expanding but there's a 'bubble' where everything changes in reverse. Even in that state, we would somehow have to figure out how to maintain the 'x,y,z' co-ordinates of the person travelling backwards. Planets move quickly, and a millisecond of a person travelling backwards will put them into deep space.
There are reasons why it's not just hard, but impossible. The universe wants to keep expanding and it has laws in place to prevent anything from preventing its ultimate goal.
I have a hypothesis, so please don't take this as fact because I haven't tested it: There is a limited amount of energy in the universe. It's neither created nor destroyed, but there's a limited amount. All the energy in the universe is not enough to reverse the state of the universe itself.
The best we can do is to change states slower. We can never reverse states in this universe. Even if we get the universe to shrink instead of expand, we will observe time as moving 'forward'.
I was going to make a comment about something, but I forgot...
did u remember
I am from the future the guy is still smoking high, I guess the world will never know what he was trying to say that one fateful day
Cool
You should probably write it on your hand next time
5 years later
RUclips recommendation: “wanna see Jim turn around in a rocket”
I believe that if you tried to travel back in time, you would collide with an earlier version of yourself, and you would either be stopped or destroyed. It would be like driving on a single- lane highway with bumper-to-bumper traffic behind you, which reperesent yourself as you traveled forward through time, at the normal rate of one second per second. If you tried to put your car in reverse, the cars behind you would crash into you, causing a cataclysmic event.
You might be able to travel forward in time at a slower rate relative to everything else, but the past is inaccessible. Maybe information could be sent, but not matter.
i agree. time in fact time can be slow down. but we never would be able travel to going back. because in fact. time is always moving. it never would stop. it only can slow down. we probably could make it slow as it possible. because at this rate. we only chasing it. but not beating it in a race. we only could equalize the time by 0,00000001 per second
because I think if we might to try to circling the earth which is round. i mean circling the earth with the same place to the same place destination. at the speed that keep increasing. i don't actually know if this would work. but maybe, just maybe we could slower the time until it reach 0,000001 per second. lol
and I guess. at that time. we have literally stop the time
SHUT THE F UP with your fking ' you can't go back in time and ' your ' you can't change the past ' loving pure bullsht. So what you want me to do, sit here and smile and say things like ' hahaha there's no turning back '? No laws show that you can't go back in time and i will not ever agree with you and you time bastards and fk all of you and time.
@@WerchAlcmena SHUT THE F UP with your fking ' you can't go back in time and ' your ' you can't change the past ' loving pure bullsht. So what you want me to do, sit here and smile and say things like ' hahaha there's no turning back '? No laws show that you can't go back in time and i will not ever agree with you and you time bastards and fk all of you and time.
@@timeistheworstthinginthewo169 Got some deep regret issues, I take it. Well, time marches on!
@@mikes4135 Marches on my ass. Why the f would somoene want time travel to be impossible or just like telling that you can't go back in time like it would be a good thing? There is more than just saying ' hahaha, there's no turning back '. Not listening, not agreeing and most importantly, fk all of you.
It's 2057. Who else is watching this.
Yo it’s me in 2076 Ah, 2057 was a great time.
I’m high asf and y’all are scaring me that you’re being serious
Hello from 2150 the daleks have taken over, go back as far as you can otherwise they'll get you
Astral projected from the realm of WE, to find that there was a huge riff in the timelines. Due to cerns hydro collider bringing forth what We are now calling earths great Shift .
Thus earths been sucked into a black hole with no cordinance in sight. Its was either this or let astroid aumanomu destroy earth. Wait, that means I'd be stuck here, this timeline as well.. Could be worse, we could all of become non existent/extinct and don't know it . .yet?!!
😅😅 Gotcha 😉✌🖖
@@_Y.Jit’s me from 2318
When I was around 6 years old I noticed that when I hung out with my friends time went by quickly but when I studied it was long and boring. I had a thought. What if i focused my brain on slowing time in my head when I was playing with my friends, Like this I can have fun for a longer period. As absurd as this sounds I can now trick my brain to feel time go slower when I have fun but go faster when I’m bored. I hope someone out there feels like me so that I don’t feel like I’m talking out of my butt. I’m now 37. I sometimes feel like I’m coo coo.
Daniel Cervantes I mean that’s pretty normal
Daniel Cervantes woah are we brothers
How can you slow time in ur head ?
Reminds me of dumb and dummber
Same but Time goes by faster for me, since I ONLY pay attention to the present, and my present knowledge
For the very first time I understand that moving and stationery clock thing, He is the true master when it comes to teach, ai wish all my professors were like him when I was in school.
What show or program is this? Anything with Brian in it, I'll watch
Drew Peterson The Science Of Doctor Who
Jacques De Vere You sir, are a saint
+Drew Peterson There is also: 'Night With the Stars.'
Watch wonders of the universe then.
Christmas lectures BBC.
I saw this play years ago.The actor walked onto the stage and said,my but how time flies,and this clock with wings flew across the stage.
What is even more interetsing is that we can go beyond the claim that 'time is personal' to the greater claim that 'time is localised in our bodies'. In other words, different parts of your body are moving through time at different rates of speed! Your arm which is moving is travelling at a different speed to the one that is stationery. Your head, which is higher and subject to lower levels of gravity, is moving at a different speed to your feet which are lower and subject to greater gravity.
Jim wasn't only moving in time at a different speed to the audeince but he was moving at a different speed to HIMSELF!
If that doesn't blow your mind then I'm not sure what will.
Did you come up with it yourself or you read it somewhere else?
@@ashfauzzamanaronno6606 I simply applied to our bodies what science claims. Gravity and velocity are the two factors which affect the speed of time and neither are uniformly spread around the body.
After watching like 100 videos this one finally explained it perfectly. Thank you Dr. Brian.
I want to time travel back to 2010 because I don’t want to live in 2020 anymore........... *WE NEED TO MAKE IT POSSIBLE*
Foolish
Can't go back in time, I'm afraid. But don't worry, you may be among the 5% of for who making it past 2030 has been planned. Mind you, you need to be mightily rich to be a part of the plan.
The virus plot failed. Now they are driving us into a planned economic collapse, so we'll die from poverty. I would have preferred to just die from that failed virus.
Imagine the confusion if the past was flooded with people from 2020/2021
@@abdumalik5586 yeah I know your foolish
I find Brian's thinking so fascinating, that makes space and time so fascinating for me.
Time travel is possible.
When i go for studying, 1 hour becomes like 1 day.
When I play video games, 1 hour becomes 15 minutes.
that's ADHD, haha
It's your interest bruh you just don't like studying I guess 😂
Love the simple and yet effective explanation 👌🏼
I watched the whole presentation on Netflix. It was awesome and now I understand how time travel actually works.
Is it still on there?
Yeah, just black and lesbian
What show?
Thanks for telling that. I have Netflix. Will check it out.
What’s the tittle on Netflix?
Supervisor: Why are you late?
Me: Time is personal to us.
That doesn't even cover 1% of the whole topic though.
most school kids read einstein's theory of relativity that was the source of all time related concepts
If it has 'doctor who' in the title it throws all logic out the window
What we know is a drop in the ocean
Did you see dark series.
Ishan Parbhakar opens your mind right
1 hour panic attack feels much longer than 1 hour of relaxing on your day off doing what you love
I like the little thing you did at the en- wait, what was I talking about?
Damn I couldn't imagine how cool if he is your Physic professor.
Maybe finish English classes first?
I know I'm late to the party on this, but feel I have something to add here. Time travel is not only possible, it is inevitable..
You see, both my parents were time travellers. I was born a time traveller. In all our combined existences, the only thing we couldn't do was move backwards through time. My parents gave up time travel at different points, my father first, my mother a couple of years ago, but I still travel on.
Always forward, not stopping, at the rate of one second per second. One day I will stop, and get lost to those that travel on still. Until then, I am a time traveller.
Jim, when asked if he'd like to fly in a rocket as a bazillion miles per hour: "Absolutely"
Jim, 1 minute previously: "Can you stop this cart moving incredibly slowly? I'm going to hurl"
Here in 2035 and yes it is possible and also your girlfriend is a quad Cali (future meme)
I will remember this comment
@@shadowman3557 i wont
@@GlenOfAbacus good for you mate
@@shadowman3557 thanks.
Digital Dylan you’re welcome
When you don’t realise this is on the dr who channel and get scared to death by the silence at the end 😂
Finally someone demonstrated the relativity as easily as I could understand. Kudos
Heyyy syed, do you remember me, I found you here by chance , this is aneesa , Katrina hades … can you recall?
@@georginawilliams7749 heyyy, woah! That's an unexpected place to collide. How's you
@@georginawilliams7749 yes of course I remember
@@syedjafferimam5789 phew, since it has been a long time I thought you might not be able to recall, can you text me on WhatsApp on the number I have above coz it’s hard to talk here , quite public lol
@@georginawilliams7749 no it's been just 3 & a half years why would I forget.
It would be good to see more of this lecture, does anyone know where it can be viewed??
Love brian cox. How he explains things is amazing
I'm a time traveler. I travel from time to time. I used to be a door-to-door door salesman. I sold doors door to door.
That's great! after learning how to time travel and instantly having the silence make me forget everything I learned.... That's fantastic!
Something that was not brought up was the fact that the astronaut's frame of reference can't be inertial if he's leaving earth and returning to earth. He has to accelerate away from earth, and then back towards earth, and from his perspective he sees gravitational fields which affect the passage of time at different points. If the astronaut was in an inertial frame during the whole trip (which is impossible by the way), he would see earth age more slowly than him, but earth would also see him age more slowly than earth. This is because you can put the origin of the frame of reference either on the astronaut or on the earth, and make either of the objects stationary if both frames of reference are inertial.
When it comes down to it, if you had a clock on earth, and the astronaut had a clock, and you set both of them to 0 at the moment the astronaut left the earth, then if the astronaut's frame of reference were inertial during the whole trip, he would expect his clock to be ahead of earth's clock. Earth would feel stationary too, and expect the astronaut to age less, so earth would expect its clock to be ahead of the astronaut's clock. Both clocks can't be ahead of each other. If earth's clock read 5, it would predict the astronaut's clock be T where T5. That means 5
I might be stupid... I dont understand why his clock would be ticking slower than ours
Danner you're not stupid. It is great to be curious, mate! This is because time is not absolute! Time is not independent, i.e, time cannot be same for everything moving at different velocities, no matter how minute the differences are. But time differences for earthly velocities are negligible due to their magnitude.
However, when you approach the speed of light, the time dilation does becomes more profound. This is what the Theories of relativity (SR and GR) were about. Everything is relative. The faster you travel, the slower will be the time for you! Same for Gravitational pull. The stronger the gravitational pull- slower the time.
Science can only observe what is happening, but it cant tell you why it is happening
Time and time again I often wondered about time travel.
This blew my mind.
That explanation was awesome. I get the concept finally. Back to the future.
Mind blown! Even more fantastic is that we could see into the distant past but only if we could travel much faster than the speed of light. Travel in an instant to a far away planet say 65 million light years away, set up a ridiculously powerful telescope and look through it back at Earth. You would be witnessing Earth as it was when the Dinosaurs roamed!
But we cannot and never will be able to travel faster than the speed of light so it is a pointless thought excercixe
@@artful1967 yet interesting to think about, so not pointless
I don't think I really understand the explanation fully yet, but what might be a tangent, or what he's saying partly, or what commenters are saying...is time is an earth bias, so we project it on the universe....but if an astronaut slummed it in space for a year, letting earth round sun, then come back....yeah that'd be a year for earth, but the astronaut abstained from our time. So it's something with not outpacing light, but being lapped to go back, and to go forward, you reverse engineer future in passed. Or stay somewhat ahead of Earth's rotation. think his explanation is actual science though and I'm imposing on it.
Watched this episode when it first came out and I was stunned. Where can I find the full episode again?
Im still PRETTY sure that Brian Cox is actually a Time Lord, does he have a pocket watch he likes to constantly ignore?
I left Australia on Monday and after 24 hours flight I reached US on Monday. Magic.
Brian Cox cites the effect of time dilation as evidence of the ability to travel in time. A man returning to Earth after travelling at near light speed through will indeed be biologically younger than his twin brother on Earth but it is a non sequitur to conclude from this that he has travelled in time.
To begin although time has been characterised as a dimension it is solely a human notion (best thought of as an imaginary interval between events) and you cannot travel through a human notion.
The observable effects of travelling at speed relative to the Earth are that at the lowest level the amount of quantum events decreases and this affects everything in the inertial frame of reference such that for example clocks run slower, people age more slowly and tea takes longer to cool down .
nah you got it wrong
@@thembrown can you substantiate why you believe my explanation to be wrong?
The light source was moving not the light beams, so a sleight of hand is being played here
@Metallisika the distance traveled was not greater, the distance was objectively the same. A sideways force and a vertical force such as is applied in this case, can be measured, and its effects on the light bulb predicted. Jim might only perceive the independent motion of the light, but the absolute sideways motion from the force applied to the chair results in the changing starting position of the vertical independent motion.
In otherwords, as Jim moves up and down the bulb with his hand, the starting position of the ball continually changes, and this accounts for the triangular zigzag motion. The bulb does not travel greater for anyone. The two separate motions I have described must be separated.
@Metallisika yes agreed, you cant add these motions together, thats why I said you need to separate them. But theory of relativity assumes you have to add different motions together and that light is the one exception. The distance is not increasing for any photon depending on the observer, the photon travels its own independent distance at all times. The atom travels faster so nothing surprising there that they last longer.
@Metallisika the rule that velocities can be added together I meant
My Lil brother: Is time travel real?
Me: Of course, I travel everywhere with my clock I called that time travel 🤷🏽🤣
If you can travel forward in time, then the people you left in the present will technically be in the past.
It’s definitely possible with time dilation. Think of the movie interstellar. If one were to go to a planet that’s affected by the gravitational field of a black hole or something similar, time on that planet could be moving significantly slower than time here on Earth. In the movie, an hour on the planet that was affected by the black hole would equate to 7 years on Earth. If one were to purposely stay on this planet for a day or so, they would essentially be traveling to the future. When they get back to Earth, they would be around 200 years into the future!
Except you would be fried by radiation if you ever got that close to a black hole. Don't believe everything you see in "the movies".
In Star Wars, the planet Coruscant was set in the centre of the galaxy. In the centre of all galaxies exist massive black holes. It's an uninhabitable zone. Go figure!
That movie was insane and scary at the same time. Who knows Nasa could have already sent people to a different planet we know nothing about
@@PreservationEnthusiast in todays world im sure they have a way to protect them from radiation by a simple suit that any normal person has no knowledge about
@@SeanOliver5981 There's no need to get involved with conspiracy theory. If we had the technology for interplanetary travel in reasonable time period, which clearly we don't, all kinds of other problems would have been solved. For example nuclear fusion, where we would have almost unlimited free energy. Instead of the archaic processes of burning fossil fuels and destroying the planet with global warming.
@@PreservationEnthusiast Even if we did have it then it wouldnt get used...just because something is there does not mean its a good idea to use.
NOT prepared for the silence at the end of that.
Am here after watching DARK cause it was amazing!! One of the best show ever created
Jim totally should have had some hair when they shot to him after Cox declared him a time traveller.
And yet most people would rather watch a soap or love Island instead. Sad
No shit...I’m goggle box all day.
well everyone has different interest, so...
In the end we all have the same fate.
I believe the basis of this is that speed of light emains same, but isnt the speed with which the chair is being moved gets added to the speed of light and thus makes time same for both
Ah , so the Movie "Flight of the Navigator" was partially accurate afterall !
i dont now is there are possibility to travel in time but travel faster then light can be made after dematerialisation...
time travel or just time perspective
***** travel
+Jeff The Ripper Technically time travel because your personal perception of time is in fact also seen in the physical effect of time on your body and mind so you would be living in a body from a different time to everything else. In that sense though, everyone has time travelled to some micro-cosmic extent.
ah but we witnessed the oscillation of the light clock, even though he travelled, to ours and his perspective, the tempo of the oscillation was constant, yet the light travelled a longer path, so that would mean they increased the speed of light, as it travelled a longer distance but in the same amount of time. boooooom
jackvincent90 no .. we can't increase the speed of light .. but it traveled more distance to us but not to him ..
but he knows he is travelling faster than we are. Ignore light, lets say it was a ball being bounced on the floor, and you bounce the same ball on a train, to both perspectives the ball is bouncing the same, yet the ball of the train, because of its difference in directional travel, the ball on the train is moving faster, as the train is carrying it. We know we can slow down light, as we know its moves slower in our atmosphere than in space, surely there are circumstances where light travels faster, we just are unable to measure it. Black holes for example.
question: he asked the audience to evaluate the path of light and the time it took versus Jim's evaluation of light and the path it took from his perspective> Was the amount of 'time' hinged to vision of light? i.e What if Jim and the audience had their eyes closed the entire time? Does Jim still travel into the future? Or only travel into the future when he opens his eyes?
Talk about completely missing the mechanics. It has nothing to do with 'the light' at all. "Light" has a fixed speed (speed = distance divided by time) relative to everything else. His 'lightbulb' at "Light" speed has to travel further than ours, but again, it has a fixed speed, so it will not be able to increase the average speed like a car would achieve that, so it has to slow down time. "Light" is a constant; Time is not. Maybe try watching it again without confusing lightbulb with speed of light.
@@sandoumir4348 cool. thanks for the reply. I never took physics, etc and all this stuff is very interesting and thought provoking. thanks!
I’ll sign up for the time travel experiments If this guys doing them, all I want is to go back and live out my days with my past self and family
Well, time travel into the past isn't possible
This is so facinating, however start to question myself how it would look like doing two experiments at the same time one from the static perspective (as now) but also the other way around from the dynamic perspective? Wouldn’t you come to the same conclusion?
I must be really dumb. A friend of mine sent me this but I really don't understand any of this. I wish I was more intelligent
Basically whoever whoever fly into space at almost the speed of light for 10 years and comes back to Earth, he would have gone into space for like 20 or so years in earth's time which is our time clock.
As Prof. Cox explains here, time is relative because it moves differently for the objects with different speeds.
The speed of light is constant and it also is faster than anything else.
As your speed grows, it gets closer to the speed of light.
When it is so close to it, time slows for you. Therefore you would travel to future.
If your speed is equal to that of light, time stops for you. However, you probably cannot make it with your material existence because light is kind of an energy and you too need to turn into energy in order to be as fast as light.
Last but not least, when you move faster than light, you would theoretically travel to past, which is out of any possibilities because as I wrote above, speed of light is faster than every other speed.
Is it simple enough to begin with?
You can become more intelligent by spending more time on learning. Nobody was born an Einstein.
No you're just fine. This is all hogwash. Basically, what they are trying to tell you is light and time travel at the same speed or very close. So if you can somehow travel at the same speed as light, you are essentially traveling at the same speed as time. So imagine being in a car on the highway and a car next to you is traveling at the same speed. It will appear as if the car is standing still but the environment around you is moving fast. So since you are traveling at the speed of light, you will be in sync with time and time stands still.
If you really try to think about it, it sounds just as silly as saying the earth is flat. Time is not metaphysical, it doesn't have attributes or traits. It is just a way we try to measure the way things change from moment to moment. Everything is always changing and if we want to find a way to document how long it takes something to change, we have to find a point of reference in which we measure what we call time. Our point of reference is the earth. We try to measure time by how long it takes the earth to rotate and go around the sun. The time we use is not perfect in calculating that because the earths orbit and rotation is not perfectly in sync with our 24 hour clock so we have leap year every 4 years to correct it.
Time as it relates to the universe and everything is a constant. If time is not a constant, then time is inaccurate. Our time on earth is inaccurate as it relates to the universe because we keep resetting it every 4 years. It is good that we do because it helps us prepare for the seasons here on earth. If we didn't reset the time, the seasons would start shifting to different months. Over time, Fall would be in December and winter would be in March. No one truly have the means to measure time accurately because we do not have the universal point of reference. This will probably blow your mind but I don't think there is a point of reference by which we could measure time from a universal standpoint. We can generalize by comparing how long it takes the earth to go around the sun to the movement of the stars but it wouldn't be accurate in the long run by a long shot. If there is no reference by which we measure time, then time does not exist. Which would mean the only thing that does exist is eternity. However in our existence, time exist for us living beings because we have a beginning and an end.
Ohhh, so that's how everything and everyone got old in interstellar. I didn't understand but now I see how the astronauts didn't age.
I want someone to invent a time machine that can take me to the past and the future.
Time travel is possible but the problem is that we have to move very fast like speed of light
It may be possible to travel forward in time, but if traveling back in time were possible, wouldn't someone from the future have already come back to visit us by now?
I guess we just have to accept that there are no second chances.
It was said by Stephen Hawking but many people criticized him lol 🤣🤣 cuz some dudes still believe in sci fiction movies😂
A fantastic explanation. All that's left now is to explain time travel to the past.
Lemme guess. You randomly got this in your recommendations too 😂
Yee😂
No
I was familiar with the idea that time moves more slowly for a moving clock and was familiar with Einstein's "twin paradox" that Prof. Cox alluded to, but I never really understood why until this video.
Unfortunately time dilation is not time travel...
Well traveling a significant fraction of the speed of light, time dilation could mimic time travel. I spend 1 year in space and 50 years could pass on Earth.
@@Riiisuu lol math is a bit off
Kino how so? I didn’t put any numbers in?
Its depend on how you define the Time Travel
Dilation itself states about how time is unique to each of us relative to our speed
What a wonderful demonstration of time by two of my most favourite scientists .