When asked by a reporter how he came up with his ideas, Einstein said that it was difficult for him to discuss because words were not involved in their formulation. Imagine thinking without the words of our internal dialog. I try this every now and then and can do it for maybe a second or two, but my thoughts can't keep up. When he died his brain was found to contain about 10x the average level of intergangliar connections - maybe that's how he could think differently.
Many people have no internal monologue. When I do math and physics I think in shapes and pictures. Language is a distraction for me. Considering that special and general relativity are largely geometric theories, it makes sense. And they are expansions of Maxwell's equations combined with the knowledge that the speed of light is a constant.
Love you guys doing more science-based topics. Too many of us have no concept of "reality," what it really is! We can fool ourselves, but we can't fool mother nature. The better we understand the sciences of nature, the better our critical thinking skills, the less likely we are to be hoodwinked by hucksters.
Sam just totally killing it on the quantum explanation. Yeah I mean and this is really the origin of quantum mechanics that goes back to the 1920s and the 1930s, a lot of it coming out of what Einstein did, but there were a lot of very busy contributors along with him. Who won the first things we had to realize even with something the size of an electron, was when it gets that small, it becomes more of a probability situation and the whole idea of probabilistic wave function to describe the landscape of time and points in space that a particle might be, or other attributes, like Spin and whatnot, you can really only describe it by a probability wave function. It describes a landscaping time of what might be realistic for that instant. But what Heisenberg figured out really early on, was his uncertainty principle, which is that you might know the velocity of a particle if you collapse part of this wave function, but you won't know its location. Conversely, if you design an experiment to try to nail its location,, the more closely you start to dial it in, the less you know about its velocity. It's a strange world.
It's not easy to explain deep ideas simply, the guy is doing a good job. What she says about that step by step thinking of Einstein is absolutely right and corresponds to the way Einstein was operating. People often think that geniuses have brilliant complex idea all day. This is not how it works, Einstein had very few ideas, sometimes it was just an intuition, a mystery that was bothering his mind since he was a kid. But unlike us mortals, he never, ever let an idea go before he's squeezed all the water out of the stone.
No matter how often or how well space-time is explained - and even though I totally believe it - it is still astounding for me to think that space-time is like a fabric that can be "shaped" by objects with mass. And also that gravity - a curve in the fabric of space-time - can make time move more slowly. And yes...those experiments that show that a particle can exist in all places at once are mind bending! Furthermore, I believe that what finally determines where a particle's position is relies on the particle simply being observed. I think that's the gist of the whole "Schrödinger's Cat" thought experiment.
Right at the break - Arvin skipped over something (for now anyway) that I think you guys were poised to connect with: With the accelerating elevator idea and the light beam curving because even though it's really fast, at the speed of light, the elevator will have moved up a little bit. And so the light beam would be curving in the presence of gravity. But based on Newton, that's impossible, because photons have no mass, and in Newton's world, gravity is based on mass. This is one thing that was absolutely revolutionary: Photons are affected by gravity just like everything else because it is the space-time that they move through that governs their path, no matter how curved it is. A black hole is an example of where it's so intense it can't even escape. This is a completely different idea then the Newtonian idea of mass being the basis of gravity. General Relativity in one sentence: "Gravity tells space-time how to curve, and space-time tells mass how to move."
Now that you two are dipping your toes into science and astronomy, I highly recommend the 1980 PBS Documentary Cosmos: A Personal Voyage. It is an excellent first step into the wider universe. It was produced and narrated by the late Dr. Carl Sagan. In 2005 it was updated by his wife (who also helped produce the 1980 series) with the latest science discoveries as well as refinements on topics in the original series. It covers not just astronomy but history, physics and so much more. I would then recommend Cosmos: Possible Worlds (2014) narrated by Dr. Neil deGrasse Tyson. The final entry in the Cosmos series Cosmos: Possible Worlds (2020), again hosted by Dr. Neil deGrasse Tyson wraps the Cosmos trilogy.
And this was before rockets. The man was insanely brilliant and changed the world. I can’t even fathom what went on in his brain and other brilliant people over the years. But I’m very thankful that there are some of us that can, and it’s fascinating
Albert Einstein's "miraculous year" was 1905, when he published a series of five papers that revolutionized physics and established him as the world's leading physicist, and would transform the way we see the universe. They included his theory of special relativity and the famous equation E=mc².
Roger Penrose is a great example of someone who think differently in the way you describe about Einstein but in recent years. He won a noble prize and has some of the most fascinating ideas about the world that I've heard to date.
You hit right on one of the attractions of working within real science. You get to be the only one in the world who knows particular things until you get to the convention or submit it for publication.
It's probably harder for us in the television and internet age to imagine how he could be so smart but someone who had time to really exercise their mind, fascinated by following through on these ideas back then, did not have the modern day distractions that all of us grow up with, that tend to stop us thinking so deeply on a subject for such an extended time. He did not have even radio to distract him. But an amazing mind he had, that over one hundred years later, most of us still will struggle to understand 10% of what he has contributed to understanding how the world around us actually is.
It wasn't the case that only Einstein understood it at the start. For instance, his first proposal for his equation was wrong, but he was helped by David Hilbert, a mathematician, to come to the correct final equation. Hilbert certainly understood it!
Niels Bohr and Max Planck, two of the founding fathers of Quantum Theory, each received a Nobel Prize in Physics for their work on quanta. Einstein is considered the third founder of Quantum Theory because he described light as quanta in his theory of the Photoelectric Effect, for which he won the 1921 Nobel Prize.
One of the most brilliant minds of today is Brian Greene. If you want to go further on this topic, check out his videos. The Fabric of the Cosmos would be a good place to begin.
What blows me away is the idea of Einstein visualizing this stuff in space without having had the ability to have ever experienced space or have the ability to test it. It wasn't observation that got him to that point, it was imagination backed up with math.
For your next universe reaction I would like to recommend "A Journey to the Edge of the Universe" (9.6m views). It was made by world class astronomer and narrator Professor David Kipping. The premise is, what if we could accelerate a space craft close to the speed of light one day. Einstein's theory of relativity taught us that the closer you travel to the speed of light the more time slows down and the distances we could potentially travel in a human life time are mind blowing. Using Einstein's maths/physics David takes us on a journey of a life time starting out at our closest star Proxima Centauri and far beyond. I implore you to take your community on a journey through the cosmos that will live with you for the rest of your lives!
Yess, more science please. I'd recommend the big think video with Brian cox about black holes, really interesting and wil blow your mind probably. Great content guys!!!
That's the genius of a scientist like Albert Einstein. He can sit and observe a simple minded blue collar window washer and come up with high level theories about the universe. That's amazing!
You should watch the Doctor Quantum video on the double slit experiment. I think it does a good job of explaining it for the layman. Richard Feynman's Fun to Imagine video would be a great reaction video. Another thing that would be great to watch but is too long for reaction videos is Richard Feynman's QED lectures. The book changed my life. His A Character of Physical Law lectures and book would be great too.
Thanks guys. Took a deep hit of my favorite before looking to enjoy a music or sports reaction. Now you got me going to bed wondering about Life, the Universe and Everything. 😁
According to Einstein's theory of relativity, time travel is theoretically possible through the concept of "time dilation," which means that time can appear to slow down for an observer traveling at very high speeds near the speed of light, essentially allowing them to experience time at a slower rate than someone stationary, creating a form of "time travel" into the future, but not necessarily back to the past. The "twin paradox" idea is that two twins are on Earth, one travels in a spaceship through space at a slower time rate than the Earth be traveling near the speed of light, when he returns his twin on Earth is many years older but he is just a fraction older, have just jumped forward in time.
The faster you travel in space, the slower you move through time. Black holes being indicative of time travel? That's because once inside a black hole, space and time trade places. So once you enter, you will no longer be moving through space, you'll be headed toward an inevitable point in time. The singularity. The end all.
His theory was presented and understood by many. But the theory became reality with the evidence of his theory from mercury. And later became fact. That is what I got out of it.
From what I’ve read and heard, and I’m no expert, but the only way to “travel through time” would be to travel at light speed or close to it and then come back. And because of gravity, earth would be in the future a bit, and you as the traveler would be the same age. So I think, from what I understand, going into the future is theoretically possible. But going into the past isn’t as far as we know
Good reference. Another one is light being able to circle the Equator ~ 7.44x per second (the Earth's circumference being about 25K miles). Makes my head spin.
I worked out once that the sun moves about 5 degrees (I think that's what it is) in the sky in that 8 minutes. So it isn't actually where you are seeing it.
I liked the cube model they gave, I knew the relatively cone shape of the curvature of space was only 2 d and i explained 3d as like the cone but on all sides in space, a sphere where all points go towards center to be exact
I wish I had been smart enough to be an astrophysicist. I love everything about space. I understand a lot of these concepts but some are so hard I have to read the explanations over and over. What really facinates me is, time dilation. We can travel into the future but not the past and physicist are not sure why we can't travel into the past. Future travel is real It happends all the time. All our satellites have to be adjusted for it. For the same reasons they are talking about in this video.
The problem you probably have is that you're trying to understand it from media that is meant for the layman. These are ALWAYS either wrong in some way or skip over things to keep it understandable by general audiences. I recommend taking the path that a physicist would take in school. Learn calculus and then learn calculus based physics. MIT and Yale have great lectures online for all of this. Once you're through basic mechanics and electromagnetism you'll be able to grasp these concepts at a much deeper level because you will have both the math and physics intuition required.
Just a warning but once you start down this rabbit hole there is no turning back. Your mind will forever be blown by the sheer madness of how the universe actually works.
Ok at the end you sort of butchered it a bit but what you were explaining was quantum superposition. That would be Bohr and Schrodinger. You should check that out. You sort of have the concept already but it will blow your mind at all of the possibilities that it creates.
Not just black holes, but anything with enormous mass will facilitate time travel into the future as time moves slower near an enormous amount of mass. You can only go to the future though. Time dilation will not help you travel into the past.
Gravity is not the same all over earth. Thus neither is time. It depends what elements are in the ground (heavy or light) and also the height, like a mountain top. The mountain top is further from the center of the earth, similar to being "closer to outer space" so the gravity is less. Accordingly one second of time is faster on a mountain top than at sea level.
Einstein originally had great reservations about the indeterministic qualities put forth in quantum theory. Thus, his famous remark that "God does not play dice with the universe."
"Quantum physics today"...... What...... Quantum Mechganics was birthed in the early 19 hundreds.... The Quantum model of the atom is essentially as it was in the 30's & 40's with Quantum ChromoDynamics coming into play for the core of the atom in the early 60's. Quantim physics really is a beast of Einsteins time & pretty much unchanged since his time...
It's both fascinating and mind-boggling to realize that space and time are two sides of the same coin. So the faster you travel through space, the slower you travel through time. Which means if I'm standing on a street corner and you're traveling down the highway at 60 mph, I'm aging faster than you are. Of course, at that speed, the difference would be infinitesimal. But if you could travel in a spaceship at 99% the speed of light, you could wing off to the Andromeda Galaxy, do a little sightseeing and return eight hours later. But though you would be only eight hours older, more than a million years would have passed on Earth by the time you got back! True, but astonishing nonetheless.
@@jettslappy7028 Yeah, yeah. But it's much more fun to fly off to a faraway galaxy than it is to zip around in a circle all day. Where's your spirit of adventure? And besides that, going around in a circle makes me dizzy. But I do understand your point.
Quantum Gravity = the force that binds protons and electrons together.. like Sun binds earth .. Question is how to access that gravity.. ? We can use celestial gravity sometimes other than our existence.. that is when satellites are “ sling shot “ into a certain path.. we have used earth, and even Mars and Jupiter’s gravity in voyager missions In our planet, periodic elements do not have any element that can strong quantum gravity that we can access .. but earth is not the only planet.. there are planets where material like Element 113-115 could be there that can project quantum gravity.. and this can be amplified the way we amplify radio signals ..
Quantum Gravity isn't the force that binds protons and electrons together. The Strong Nuclear Force does that. Quantum Gravity isn't a force at all, it's a field of science trying to explain gravity in terms of Quantum Mechanics.
There are no black holes. Einstein wrote in 1939 - "The essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of General Relativity predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters (star) whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light." He was referring to dilation. Mass that is dilated is smeared through spacetime relative to an outside observer. It's what our high school teachers were talking about when they said "mass becomes infinite at the speed of light". Time dilation is just one aspect of dilation. Even mass that exists at 75% light speed is partially dilated. It occurs wherever there is an astronomical quantity of mass. This includes the centers of very high mass stars and the overwhelming majority of galaxy centers. The mass at the center of our own galaxy is dilated. This means that there is no valid XYZ coordinate we can attribute to it, you can't point your finger at something that is smeared through spacetime. In other words that mass is all around us. It's the "missing mass" needed to explain galaxy rotation curves. Dilation does not occur in galaxies with low mass centers because they do not have enough mass to achieve relativistic velocities. It has been confirmed in 6 ultra diffuse galaxies including NGC 1052-DF2 and DF4 to have no dark matter, in other words they have normal rotation rates.
I would argue that he is arguing against the existence of singularities as points of mass wiih zero volume and infinite density, rather than against the existence of black holes in general. I'm not a physicist, but scientist's have observed objects that fit the predicted behavior of what are referred to as black holes, in terms of size, gravitational force, types of radiation emitted/absorbed, etc. But we have no observations of singularities because they exist only within the Schwarzchild radius and are thus unobservable. All we can say about the objects referred to as singularities is their mass and that they are physically smaller than their Schwarzchild radii.
@jrepka01 His reasoning on why singularities do not exist is solid, they definitely don't exist. Nobody believed in them when he was alive including Plank, Bohr, Schrodinger, Dirac, Heisenberg, Pauli, Feynman etc. All observed phenomena are perfectly explained by dilation, even galaxy rotation curves. What we see in modern astronomy has been known since 1925. This is when the existence of galaxies was confirmed. It was clear that there should be an astronomical quantity of light emanating from our own galactic center. Singularities were popularized by television and movies beginning in the 1960's. There can only be clarity in astronomy when the concept is discarded.
@@jrepka01There is no Schwarzchild radius according to Schwarzchild himself. He was publicly corrected and knew he was wrong. Einstein repeatedly said that singularities cannot exist. Nobody believed in them when he was alive including Plank, Bohr, Schrodinger, Dirac, Heisenberg, Pauli, Feynman etc. All observed phenomena are perfectly explained by dilation including galaxy rotation curves. What we see in modern astronomy has been known since 1925. This is when the existence of galaxies was confirmed. It was clear that there should be an astronomical quantity of light emanating from our own galactic center. Singularities were popularized by television and movies beginning in the 1960's. There can only be clarity in astronomy when the concept is discarded.
I was just remebering an old steven wright joke- if you were in a car travelling at the speed of light and switched your headlights on would they still work?
Some people consider themselves intelligent because they read and memorised what others have come up with. That's not being intelligent. Being intelligent is being able to figure out things, come up with conclusions just by observing and/or imagining things in your head. Geniuses may have a good memory but having a good memory doesn't make you a genius.
Stephen Hawikng is probably the closest one to Einstein by changing science with thought experiments, he also was very famous and was confined to a wheelchair and eventually lost his ability to speak and move his body other than hgis head.
I don't believe the passage of time on the international space station is because they are weightless. I believe it is because they are measurably further from the center of the Earth than those people on the surface. The gravitational strength is a function of not only the mass of the object (Earth), but also of the distance from the center of that mass. The farther you are from Earth, the less the gravitational force will be. Hence, the farther from Earth, the greater the difference in gravitational force relative to people on the planet's surface, and greater the difference in the passage of time. People and things are weightless on the space station because it is also revolving around the Earth at an angular speed such that the centrifugal action exactly counteracts the gravitational pull. The angular speed to create this weightlessness also contributes to time dilation, together with the reduced gravitational strength.
What is gravity? is the big, unanswered question. Quantum gravity has no experimental models yet to confirm. Loop Quantum Gravity does try to marry quantum with classic theories. We understand the attractive nature of magnets. We are nowhere close to equally understanding gravity.
Probably the closest in mind and imagination to Enstein in our generation was Professor Stephen Hawkings. But has sadly passed. He wrote "A Brief History of Time"
Do you guys ever watch tedtalks? I could get lost for days on that site. In case you guys or any of your followers don't know tedtalks is a group that posts speeches / lectures by some really smart people on a wide range of educational topics
The mathematics of general relativity are horribly complex. It was intractable for a year, until Karl Riemannian proposed the first real solution. One is justified in supposing that we've observed all what is possible from the equation in the last 100 years, this is largely true but e.g. gravitational waves were confirmed not so long ago. And the effect of GR on time absolutely dominates gravity in our solar system scale.
When asked by a reporter how he came up with his ideas, Einstein said that it was difficult for him to discuss because words were not involved in their formulation. Imagine thinking without the words of our internal dialog. I try this every now and then and can do it for maybe a second or two, but my thoughts can't keep up. When he died his brain was found to contain about 10x the average level of intergangliar connections - maybe that's how he could think differently.
Yeah that's true. Chimpanzees outperform humans in memory tasks because they don't have words to slow them down.
His brain was stolen.
Many people have no internal monologue. When I do math and physics I think in shapes and pictures. Language is a distraction for me.
Considering that special and general relativity are largely geometric theories, it makes sense. And they are expansions of Maxwell's equations combined with the knowledge that the speed of light is a constant.
@@steelersgoingfor7in2024 One piece of his brain was stolen
Having no internal dialogue is not very uncommon. Most things I do are without thinking in words.
Love you guys doing more science-based topics. Too many of us have no concept of "reality," what it really is! We can fool ourselves, but we can't fool mother nature. The better we understand the sciences of nature, the better our critical thinking skills, the less likely we are to be hoodwinked by hucksters.
Sam just totally killing it on the quantum explanation. Yeah I mean and this is really the origin of quantum mechanics that goes back to the 1920s and the 1930s, a lot of it coming out of what Einstein did, but there were a lot of very busy contributors along with him.
Who won the first things we had to realize even with something the size of an electron, was when it gets that small, it becomes more of a probability situation and the whole idea of probabilistic wave function to describe the landscape of time and points in space that a particle might be, or other attributes, like Spin and whatnot, you can really only describe it by a probability wave function. It describes a landscaping time of what might be realistic for that instant.
But what Heisenberg figured out really early on, was his uncertainty principle, which is that you might know the velocity of a particle if you collapse part of this wave function, but you won't know its location. Conversely, if you design an experiment to try to nail its location,, the more closely you start to dial it in, the less you know about its velocity.
It's a strange world.
It's not easy to explain deep ideas simply, the guy is doing a good job. What she says about that step by step thinking of Einstein is absolutely right and corresponds to the way Einstein was operating. People often think that geniuses have brilliant complex idea all day. This is not how it works, Einstein had very few ideas, sometimes it was just an intuition, a mystery that was bothering his mind since he was a kid. But unlike us mortals, he never, ever let an idea go before he's squeezed all the water out of the stone.
No matter how often or how well space-time is explained - and even though I totally believe it - it is still astounding for me to think that space-time is like a fabric that can be "shaped" by objects with mass.
And also that gravity - a curve in the fabric of space-time - can make time move more slowly.
And yes...those experiments that show that a particle can exist in all places at once are mind bending!
Furthermore, I believe that what finally determines where a particle's position is relies on the particle simply being observed.
I think that's the gist of the whole "Schrödinger's Cat" thought experiment.
Right at the break - Arvin skipped over something (for now anyway) that I think you guys were poised to connect with:
With the accelerating elevator idea and the light beam curving because even though it's really fast, at the speed of light, the elevator will have moved up a little bit. And so the light beam would be curving in the presence of gravity.
But based on Newton, that's impossible, because photons have no mass, and in Newton's world, gravity is based on mass. This is one thing that was absolutely revolutionary:
Photons are affected by gravity just like everything else because it is the space-time that they move through that governs their path, no matter how curved it is. A black hole is an example of where it's so intense it can't even escape. This is a completely different idea then the Newtonian idea of mass being the basis of gravity.
General Relativity in one sentence: "Gravity tells space-time how to curve, and space-time tells mass how to move."
Now that you two are dipping your toes into science and astronomy, I highly recommend the 1980 PBS Documentary Cosmos: A Personal Voyage. It is an excellent first step into the wider universe. It was produced and narrated by the late Dr. Carl Sagan. In 2005 it was updated by his wife (who also helped produce the 1980 series) with the latest science discoveries as well as refinements on topics in the original series. It covers not just astronomy but history, physics and so much more. I would then recommend Cosmos: Possible Worlds (2014) narrated by Dr. Neil deGrasse Tyson. The final entry in the Cosmos series Cosmos: Possible Worlds (2020), again hosted by Dr. Neil deGrasse Tyson wraps the Cosmos trilogy.
And this was before rockets. The man was insanely brilliant and changed the world. I can’t even fathom what went on in his brain and other brilliant people over the years. But I’m very thankful that there are some of us that can, and it’s fascinating
Albert Einstein's "miraculous year" was 1905, when he published a series of five papers that revolutionized physics and established him as the world's leading physicist, and would transform the way we see the universe. They included his theory of special relativity and the famous equation E=mc².
Roger Penrose is a great example of someone who think differently in the way you describe about Einstein but in recent years. He won a noble prize and has some of the most fascinating ideas about the world that I've heard to date.
Arvin is a great explainer!
Great video, Sam and Phil! I can add another reason to watch your channel - music, sports, humor and now, continuing education.
You hit right on one of the attractions of working within real science. You get to be the only one in the world who knows particular things until you get to the convention or submit it for publication.
It's probably harder for us in the television and internet age to imagine how he could be so smart but someone who had time to really exercise their mind, fascinated by following through on these ideas back then, did not have the modern day distractions that all of us grow up with, that tend to stop us thinking so deeply on a subject for such an extended time. He did not have even radio to distract him. But an amazing mind he had, that over one hundred years later, most of us still will struggle to understand 10% of what he has contributed to understanding how the world around us actually is.
It wasn't the case that only Einstein understood it at the start. For instance, his first proposal for his equation was wrong, but he was helped by David Hilbert, a mathematician, to come to the correct final equation. Hilbert certainly understood it!
Niels Bohr and Max Planck, two of the founding fathers of Quantum Theory, each received a Nobel Prize in Physics for their work on quanta. Einstein is considered the third founder of Quantum Theory because he described light as quanta in his theory of the Photoelectric Effect, for which he won the 1921 Nobel Prize.
Black holes have been observed and prhotographed, and we have a pretty good idea about what happens when you enter a black hole: you won't survive.
One of the most brilliant minds of today is Brian Greene. If you want to go further on this topic, check out his videos. The Fabric of the Cosmos would be a good place to begin.
What blows me away is the idea of Einstein visualizing this stuff in space without having had the ability to have ever experienced space or have the ability to test it. It wasn't observation that got him to that point, it was imagination backed up with math.
For your next universe reaction I would like to recommend "A Journey to the Edge of the Universe" (9.6m views). It was made by world class astronomer and narrator Professor David Kipping. The premise is, what if we could accelerate a space craft close to the speed of light one day. Einstein's theory of relativity taught us that the closer you travel to the speed of light the more time slows down and the distances we could potentially travel in a human life time are mind blowing. Using Einstein's maths/physics David takes us on a journey of a life time starting out at our closest star Proxima Centauri and far beyond. I implore you to take your community on a journey through the cosmos that will live with you for the rest of your lives!
"A Journey to the End of the Universe" not edge, just so there is no confusion, it is on the cool worlds channel
I love that they are expanding their knowledge.
Einstein was able to explain it to many scientists, and through his articles.
Yess, more science please. I'd recommend the big think video with Brian cox about black holes, really interesting and wil blow your mind probably. Great content guys!!!
That's the genius of a scientist like Albert Einstein. He can sit and observe a simple minded blue collar window washer and come up with high level theories about the universe. That's amazing!
21:50 You're referring to the double slit experience
Yeah please watch a video explaining the double slit experiment! It’s the perfect entry point into the subject!
You should watch the Doctor Quantum video on the double slit experiment. I think it does a good job of explaining it for the layman.
Richard Feynman's Fun to Imagine video would be a great reaction video.
Another thing that would be great to watch but is too long for reaction videos is Richard Feynman's QED lectures. The book changed my life.
His A Character of Physical Law lectures and book would be great too.
Thanks guys. Took a deep hit of my favorite before looking to enjoy a music or sports reaction. Now you got me going to bed wondering about Life, the Universe and Everything. 😁
According to Einstein's theory of relativity, time travel is theoretically possible through the concept of "time dilation," which means that time can appear to slow down for an observer traveling at very high speeds near the speed of light, essentially allowing them to experience time at a slower rate than someone stationary, creating a form of "time travel" into the future, but not necessarily back to the past.
The "twin paradox" idea is that two twins are on Earth, one travels in a spaceship through space at a slower time rate than the Earth be traveling near the speed of light, when he returns his twin on Earth is many years older but he is just a fraction older, have just jumped forward in time.
The faster you travel in space, the slower you move through time. Black holes being indicative of time travel? That's because once inside a black hole, space and time trade places. So once you enter, you will no longer be moving through space, you'll be headed toward an inevitable point in time. The singularity. The end all.
101% true!
iv watched this guy before. and space man too. good stuff.
great video
His theory was presented and understood by many. But the theory became reality with the evidence of his theory from mercury. And later became fact. That is what I got out of it.
From what I’ve read and heard, and I’m no expert, but the only way to “travel through time” would be to travel at light speed or close to it and then come back. And because of gravity, earth would be in the future a bit, and you as the traveler would be the same age. So I think, from what I understand, going into the future is theoretically possible. But going into the past isn’t as far as we know
Just imagine, light travels at 186,000 mps. Takes a little over 8 min.s from Sun to Earth.
Almost 92M miles away.
Good reference. Another one is light being able to circle the Equator ~ 7.44x per second (the Earth's circumference being about 25K miles). Makes my head spin.
I worked out once that the sun moves about 5 degrees (I think that's what it is) in the sky in that 8 minutes. So it isn't actually where you are seeing it.
I liked the cube model they gave, I knew the relatively cone shape of the curvature of space was only 2 d and i explained 3d as like the cone but on all sides in space, a sphere where all points go towards center to be exact
I like this, hope you are able to make more reaction videos about astronomy.
I wish I had been smart enough to be an astrophysicist. I love everything about space. I understand a lot of these concepts but some are so hard I have to read the explanations over and over. What really facinates me is, time dilation. We can travel into the future but not the past and physicist are not sure why we can't travel into the past. Future travel is real It happends all the time. All our satellites have to be adjusted for it. For the same reasons they are talking about in this video.
The problem you probably have is that you're trying to understand it from media that is meant for the layman. These are ALWAYS either wrong in some way or skip over things to keep it understandable by general audiences. I recommend taking the path that a physicist would take in school. Learn calculus and then learn calculus based physics. MIT and Yale have great lectures online for all of this. Once you're through basic mechanics and electromagnetism you'll be able to grasp these concepts at a much deeper level because you will have both the math and physics intuition required.
Now I get it, thanks.
Just a warning but once you start down this rabbit hole there is no turning back. Your mind will forever be blown by the sheer madness of how the universe actually works.
Ok at the end you sort of butchered it a bit but what you were explaining was quantum superposition. That would be Bohr and Schrodinger. You should check that out. You sort of have the concept already but it will blow your mind at all of the possibilities that it creates.
Not just black holes, but anything with enormous mass will facilitate time travel into the future as time moves slower near an enormous amount of mass. You can only go to the future though. Time dilation will not help you travel into the past.
Alvin ash and Sabine are great channels
Gravity is not the same all over earth. Thus neither is time. It depends what elements are in the ground (heavy or light) and also the height, like a mountain top. The mountain top is further from the center of the earth, similar to being "closer to outer space" so the gravity is less. Accordingly one second of time is faster on a mountain top than at sea level.
Einstein originally had great reservations about the indeterministic qualities put forth in quantum theory. Thus, his famous remark that "God does not play dice with the universe."
"Quantum physics today"......
What......
Quantum Mechganics was birthed in the early 19 hundreds....
The Quantum model of the atom is essentially as it was in the 30's & 40's with Quantum ChromoDynamics coming into play for the core of the atom in the early 60's.
Quantim physics really is a beast of Einsteins time & pretty much unchanged since his time...
Steven Hawking would be the nearest comparison to Einstein.
Great video thanks for sharing. :)
Which is even more mind blowing, it's the fact that some still think earth is flat😆
You have the voice of a 1970's smooth jazz radio station DJ.
you guys should check a segment of Carl Sagan's show about Eratosthenes
Being a genius is pretty much asking the correct questions
It's both fascinating and mind-boggling to realize that space and time are two sides of the same coin. So the faster you travel through space, the slower you travel through time. Which means if I'm standing on a street corner and you're traveling down the highway at 60 mph, I'm aging faster than you are. Of course, at that speed, the difference would be infinitesimal. But if you could travel in a spaceship at 99% the speed of light, you could wing off to the Andromeda Galaxy, do a little sightseeing and return eight hours later. But though you would be only eight hours older, more than a million years would have passed on Earth by the time you got back! True, but astonishing nonetheless.
The Andromeda trip adds unnecessary confusion.
You can just go very fast in a small circle to get the same effect. No need to travel far away.
@@jettslappy7028 Yeah, yeah. But it's much more fun to fly off to a faraway galaxy than it is to zip around in a circle all day. Where's your spirit of adventure? And besides that, going around in a circle makes me dizzy. But I do understand your point.
I’d love to recommend cool worlds channel a journey to the end of the universe
Quantum Gravity = the force that binds protons and electrons together.. like Sun binds earth ..
Question is how to access that gravity.. ?
We can use celestial gravity sometimes other than our existence.. that is when satellites are “ sling shot “ into a certain path.. we have used earth, and even Mars and Jupiter’s gravity in voyager missions
In our planet, periodic elements do not have any element that can strong quantum gravity that we can access .. but earth is not the only planet..
there are planets where material like Element 113-115 could be there that can project quantum gravity.. and this can be amplified the way we amplify radio signals ..
Quantum Gravity isn't the force that binds protons and electrons together. The Strong Nuclear Force does that. Quantum Gravity isn't a force at all, it's a field of science trying to explain gravity in terms of Quantum Mechanics.
There are no black holes. Einstein wrote in 1939 -
"The essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of General Relativity predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters (star) whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light."
He was referring to dilation. Mass that is dilated is smeared through spacetime relative to an outside observer. It's what our high school teachers were talking about when they said "mass becomes infinite at the speed of light". Time dilation is just one aspect of dilation. Even mass that exists at 75% light speed is partially dilated.
It occurs wherever there is an astronomical quantity of mass. This includes the centers of very high mass stars and the overwhelming majority of galaxy centers.
The mass at the center of our own galaxy is dilated. This means that there is no valid XYZ coordinate we can attribute to it, you can't point your finger at something that is smeared through spacetime. In other words that mass is all around us. It's the "missing mass" needed to explain galaxy rotation curves.
Dilation does not occur in galaxies with low mass centers because they do not have enough mass to achieve relativistic velocities. It has been confirmed in 6 ultra diffuse galaxies including NGC 1052-DF2 and DF4 to have no dark matter, in other words they have normal rotation rates.
I would argue that he is arguing against the existence of singularities as points of mass wiih zero volume and infinite density, rather than against the existence of black holes in general. I'm not a physicist, but scientist's have observed objects that fit the predicted behavior of what are referred to as black holes, in terms of size, gravitational force, types of radiation emitted/absorbed, etc. But we have no observations of singularities because they exist only within the Schwarzchild radius and are thus unobservable. All we can say about the objects referred to as singularities is their mass and that they are physically smaller than their Schwarzchild radii.
@jrepka01 His reasoning on why singularities do not exist is solid, they definitely don't exist. Nobody believed in them when he was alive including Plank, Bohr, Schrodinger, Dirac, Heisenberg, Pauli, Feynman etc.
All observed phenomena are perfectly explained by dilation, even galaxy rotation curves. What we see in modern astronomy has been known since 1925. This is when the existence of galaxies was confirmed. It was clear that there should be an astronomical quantity of light emanating from our own galactic center.
Singularities were popularized by television and movies beginning in the 1960's. There can only be clarity in astronomy when the concept is discarded.
@@jrepka01There is no Schwarzchild radius according to Schwarzchild himself. He was publicly corrected and knew he was wrong. Einstein repeatedly said that singularities cannot exist. Nobody believed in them when he was alive including Plank, Bohr, Schrodinger, Dirac, Heisenberg, Pauli, Feynman etc.
All observed phenomena are perfectly explained by dilation including galaxy rotation curves. What we see in modern astronomy has been known since 1925. This is when the existence of galaxies was confirmed. It was clear that there should be an astronomical quantity of light emanating from our own galactic center.
Singularities were popularized by television and movies beginning in the 1960's. There can only be clarity in astronomy when the concept is discarded.
I was just remebering an old steven wright joke- if you were in a car travelling at the speed of light and switched your headlights on would they still work?
He may have been joking but it's actually a serious question about physics. The answer is yes.
@@Shoomer1988 yes was funny and interesting question at the same time.Thanks i did not know the answer.
There's a cool science movie on youtube called 'Photon' with great visuals.
With relativity and quantum mechanics physics has moved beyond metaphor; it's not LIKE anything in your world.
Some people consider themselves intelligent because they read and memorised what others have come up with. That's not being intelligent. Being intelligent is being able to figure out things, come up with conclusions just by observing and/or imagining things in your head.
Geniuses may have a good memory but having a good memory doesn't make you a genius.
Stephen Hawikng is probably the closest one to Einstein by changing science with thought experiments, he also was very famous and was confined to a wheelchair and eventually lost his ability to speak and move his body other than hgis head.
GR is hard and not explained well by this sort of thing but lets see.
22:30 Double-slit experiment:
en.wikipedia.org/wiki/Double-slit_experiment
Can u do some Beavis and Butthead next, we need to balance things out
I don't believe the passage of time on the international space station is because they are weightless. I believe it is because they are measurably further from the center of the Earth than those people on the surface. The gravitational strength is a function of not only the mass of the object (Earth), but also of the distance from the center of that mass. The farther you are from Earth, the less the gravitational force will be. Hence, the farther from Earth, the greater the difference in gravitational force relative to people on the planet's surface, and greater the difference in the passage of time. People and things are weightless on the space station because it is also revolving around the Earth at an angular speed such that the centrifugal action exactly counteracts the gravitational pull. The angular speed to create this weightlessness also contributes to time dilation, together with the reduced gravitational strength.
What is gravity? is the big, unanswered question. Quantum gravity has no experimental models yet to confirm. Loop Quantum Gravity does try to marry quantum with classic theories. We understand the attractive nature of magnets. We are nowhere close to equally understanding gravity.
Probably the closest in mind and imagination to Enstein in our generation was Professor Stephen Hawkings. But has sadly passed. He wrote "A Brief History of Time"
I agree. Among people who are still alive, do you think we have someone who could be compared to Einstein (his mind)?
Do you guys ever watch tedtalks? I could get lost for days on that site. In case you guys or any of your followers don't know tedtalks is a group that posts speeches / lectures by some really smart people on a wide range of educational topics
👍
I woder if the wheel was misunderstood.
Wether you like him or not, Elon Musk is today's Einstein.
The mathematics of general relativity are horribly complex. It was intractable for a year, until Karl Riemannian proposed the first real solution. One is justified in supposing that we've observed all what is possible from the equation in the last 100 years, this is largely true but e.g. gravitational waves were confirmed not so long ago. And the effect of GR on time absolutely dominates gravity in our solar system scale.
You want to have your mind blown? Do a video on the really really small: quantum mechanics. Not intuitive at all.
I reckon you can travel through a black hole no worries as long as your okay being molecular soup at the other end.
Not the most clear or precise explanation….little difficult to visualize maybe?
Made for slow folk,
that guys hair is distracting