Here's a question I've seen a lot in comments: OK, I'm accelerating up but then shouldn't someone on the other side of the globe fall off? No, here's why: Either watch again from 8:28 or read what I've written below... Spacetime is curved - it curves the opposite direction on the other side of the Earth. Neither us on this side of the Earth nor they on the other side are changing our spacial coordinates - we're not moving up, they're not moving down - Earth isn't flying into one of us. BUT we both ARE accelerating. In curved spacetime you have to accelerate just to remain stationary. The traditional definition of acceleration is something changing its velocity. In general relativity you have to embrace a new definition of acceleration: it means deviating from a geodesic - not going on a straight line path through spacetime. Near the Earth a geodesic is a parabola so unless you're moving in a parabolic arc (like on a zero-g plane) you are accelerating. This definition is the same as the old one so if you're accelerating in deep space then your velocity is changing. *BUT*... if you are near a large mass you are in curved spacetime, now acceleration your velocity is changing. You can stay stationary relative to Earth's surface and still be accelerating. This is because your acceleration should be measured not relative to the Earth's surface but relative to free-falling objects - they are inertial observers. Imagine this - I'm in deep space and I make horizontal rows and rows of stationary golf balls. Then I hop in my rocket and accelerate up through them. Just think about what that looks like. Now my rocket is back on Earth just sitting there. I freeze time for a sec and make horizontal rows and rows of golf balls up into the atmosphere. Now unfreeze time. What do you see? If you just look at the golf balls and the rocket ship it looks the same as the situation in space where the golf balls were stationary and the rocket was accelerating. Einstein's point was the golf balls have the better claim as the "stationary" thing since their experience is just like the golf balls in deep space - no forces experienced. The rocket on Earth is just like the rocket in space. It feels a force and hence an acceleration.
@Veritasium "In curved space time you have to accelerate just to remain stationary" Seems more like physicists have become so enthralled by these mathematical equations they are willing to throw out observable reality for them. I have two options, I can either call a lack of motion "acceleration" (which contradicts the clear definition of the term) or question the math / model I'm using to describe the physical world.
@@destroya3303 throwing out the way things appear to be is core to physics. Aristotle said an object's natural state is to come to rest. Newton figured out it was friction making everything come to rest and without that force everything would keep moving in a straight line with constant velocity. You are being Aristotle in this situation.
@@destroya3303 You do understand that motion itself is relative? When you don't accelerate, you don't feel any force, and so far the falling object doesn't feel it (well it does feel air but it's a friction and it's a force), while you stationary - do. And you move up relative to falling object, it's just that you climb curved spacetime same amount that it curves
As long as I've known Derek he's consistently asked the difficult questions. This video challenged me, and taught me many things. I want to try the eclipse photo now. Impressed Eddington did it in 1919.
The fact that you can make videos on topics that are so out of the ordinary, and most people would never be able understand it without years of education, into a short video that is free to watch and actually understandable is amazing
@@okktok no I'm 14 and I understood everything I just needed to commit and re watch it 5-6 times to get every single term and to kinda start viewing things differently
I never really could wrap my head around the concept of curved spacetime, but this video changes that. Thank you very much for showing me in a way I could understand, this actually changes everything for me
@@landronsc The fact that in order to create force you need to spend energy (electricity, etc) but gravity doesn't need energy. The Sun doesn't lose energy while holding the whole solar system around itself for 6 billion years. The earth has had gravity for 5 billion years and it still has energy left in it. This shows that gravity is not some type of force. It's something that the existence of matter creates. The very existence of matter dilates time and curves the space around it.
@@ohwow2074 Actually, it is largely coherent with Newtonian physics. Essentially, Newtonian physics is what General relativity simplifies to under normal everyday circumstances. It is extremely useful and should certainly not be trown out the window unless you're stupid or into mental BDSM.
@@Релёкс84 i find his explanation lacking a few crucial aspects... maybe you could fill me in If you push in one direction, the reaction can't be omnidirectional, or am I missing something? At least in the case of celestial objects. (Maybe slamming a melon with a hammer can result in omnidirectional explosion haha, but this is different I think) So, what about people and stuff on the other side of the globe, seems like they would either fall off or just be left into dead of space. He also doesn't explain why would objects "fall" towards the center of Earth at all. (Objects do go towards the center, right? or that's the myth). It would make sense if the objects traveled towards the gravitational well (towards the center of it), while also being pushed by Earth's motion, but didn't mention that, at least not directly I think. But yeah, the opposite side of Earth, I need an explanation for that. Because, intuitively, if you rotate a ball in spiral, I feel like the only spot that would push and make objects cling to the ball is what? 5-15% of the surface? idk, but the spot would also change constantly...
@Dancing Swords Because it contradicts observable things, like things falling towards the ground, by giving new definitions to words like force, gravity, acceleration. Even if all is true you can't steal words you must invent new words to describe them.
@Dancing Swords So why do the army use parachutes? You better explain them: "There is no gravity, look at me jump without parachute." Link here how you explain and jump. Thanks.
As a stem cell researcher I've recently read about studies investigating why organisms need gravity to develop and would have great difficulties in spaceships. Early attempts of growing plants in spaceships failed since plants need gravity for their root development. However, even single cells need gravity for molecular processes. For example, the cytoskeleton (which help cells to maintain their shapes) and several protein families have been shown to be affected by the absence of gravity (it would actually be funny to make a video about that myself). Great video as always!
so you are saying that life developed under continually accelerating circumstances and requires continued acceleration for biological life to not fail? energywavetheory.com
@@govcorpwatch Isn't the earth in a constant motion and traveling thru space relative to everything else and life developped here on earth within those conditions, i guess...?
@@xexstartheyoutuber2424 Derek says in the video that falling off a roof is one way you could feel weightless. Derek also assumes that if you're watching this video right now, then you probably don't feel weightless because you're probably sitting down on a couch or bed or whatever. So the guy who made the comment implied that he was, in fact, falling off a roof while watching the video, making him feel weightless. God, dissecting jokes really isn't fun
Reminds me of a joke in one of the ASDF Movie. A guy says: Screw Gravity. Then simply floats away. ... it's much better seen than written in text, the asdf jokes are mostly visual.
Yeah, why would it be curved. Time is added all the time, so spacetime is everexpanding, perhaps we need to accelerate to stand still. Far fetched I know.
@@Quismo12 if you don't accelerate it will seem like everything around you is moving and you are "falling" toward earth. But if you let earth push you along it will seem like your just standing still not moving up or down.
@@YorinSenpai well it doesn't really matter. Especially with how low level the physics u get taught in school is. 99% of the time u get the watered down version cus that's all that's needed
Usually school starts with teaching you the things that have already been proven wrong like the bor atom model. Just because humans are still able to understand that - in contrast to quantum physics.
@@frankkrumnow7194 And it's really all that's needed unless you pursue something more scientifically minded. If you take chemistry you will learn that everything you thought you knew was actually a simplification multiple times. 😂 The thing is that often the simple models and theories describe what is happening just fine for almost everything we need it to.
Been through college in physics and physical engineering and honestly no professor would explain in such an interesting and somehow profound way. Thank you
Hey if you don’t mind me asking, which uni/college did you go to for physical engineering, that is a major I’m interested in and from my research, very few colleges have that as an option and I will be applying to colleges next year so it would be great iylmk
Ummm... no. maybe initially as you leave the plane, but you soon reach terminal velocity because of air resistance and cease accelerating in relation to the Earth.
I have heard this argument before and the claim was that you are accelerating *in time* since space-time includes, you know... time... and time moves forward, we don't know how to stop accelerating through time.
This would mean that time would pass at different "speeds" depending on how close you are to a big pile of mass... and that's actually how it is. The bigger the mass, the slower the time. In black hole singularities time should literally stop. And no, I don't fully grasp that, it's just what I remember from watching so many pop science stuff about relativity.
I finally understand now the curved spacetime. I've watched this 3 times already and now I finally got what he means by gravity is just an illusion. I believe it, when you fully understand how it works. :) Thank you, Derek. I love it when I learned something that you've been asking yourself your whole life. This video explains it all very well. Great video.
I’ve never understood the concept of bending space time around masses until this video. And now it makes sense how light gets trapped in black holes despite having essentially no mass
my understanding of this is, mass shapes space, and matter (mass) follows the shape of space, and we give this following of space the name gravity. That’s how understand it?
*As a Harvard Neuroscientist, here's another mind-bending thought. When you rotate your head, you are NOT in control of the primary directionality of your eye movements.* Try this. Keep your head still and look at your finger while you shake your finger left and right; your finger will look blurry due to motion blur. Now, instead, keep your finger still and look at it while you simultaneously shake your head left and right, which will demonstrate - in this situation - that you are still able to maintain a stable image of your finger. This is because your sense of your head in space - your vestibular system - has a hardwired reflex to move your eyes in the opposite direction of your rotational head movements. This vestibular-ocular reflex (VOR) ensures automatic dynamic stabilization of images during head movements. You are not consciously doing this, and you can not consciously override it. The VOR is truly a reflex and, interestingly, does not depend on vision. During head movements, you will still have a strong VOR if you are in the dark or if you have your eyes closed. Your VOR originates from your vestibular system, which is located in your inner ear right next to your cochlea - your organ of hearing. Your vestibular system for rotational head movements consists of a series of three fluid-filled semicircular canals that have little "hair" cells inside the canals. When your head moves up-down (pitch), left-right (yaw), or shoulder-to-shoulder (roll), fluid inside the corresponding semicircular canal flows. This head motion-induced flow bends the hair cells within the canal to ultimately send electrical impulses to your hindbrain. These electrical impulses - encoding head movement - then talk to parts of your brain controlling eye movements, which connect to your eye muscles to reflexively move your eyes in the opposite direction of your head movement. So be thankful that your sense of your head in space - your vestibular system - takes care of maintaining a stable image of the world even when your head bobs around as you walk. Otherwise, walking would be a blurry journey of craziness. Videos coming soon.
I never thought about how if someone else holds the phone its hard to read text, because the phone is moving like finger in the experiment. But if the phone is stationary, you can read it even if you are shaking your head :0
"This vestibular-ocular reflex (VOR) ensures automatic dynamic stabilization of images during head movements. You are not consciously doing this, and you can not consciously override it." I can move my head from side to side while looking at my finger (or another static object) and see motion blur, at least if I shake my head fast enough. I can't focus on my finger without it blurring if I move it though, unless I move it really really slowly.
I was a physics major for my undergrad and space time was something that I never understood as well as I wanted. I understood how it worked but was never able to totally rationalize it to myself. This video helped me so much. Thank you!
Would you believe that Elen Musk (Space-X) had never took collage in rocket science, nor engineering...but he says he took physics, "And that helped...", stated, Elen Musk. Gravity exist by evidence of: (1) why does the compass point to the North; and (2) the surface of planet Earth moves eastwards from a rotation at about 560 MPH, at the same time the planet Earth 🌏 is swirling up and down and all around while the planet Earth is traveling about 1,600 miles MPH around the Sun...hence, resulting into gravitational energy upon planet Earth and also some form of gravity upon all planets and moons throughout the universe, as well as making all plants round shape and not flat, triangle or other shapes then just round shape...correct ?
@Keven Heinz holy man, im not sure if Im too dumb to understand this smart guy, or the guy is dumb while trying to sound like he is smart, all while not being able to convey ideas properly.
@@billythekid5628 your math is WAY off. and your 1. is not true. That's a magnetic North, which changes. AND Gravity isnt the same force, the world over. There is a map that shows the gravity the world over. Ive wanted to take a known GRAM around using that map and see for myself. Your 2. The Earth, at the equator, is traveling exactly 1,000 miles an hour. (That's why a day is 24 hours) cause the earth is roughly 24,000 miles around. We are traveling 67,000 miles per hour around the sun. In total, YOU, yourself are moving something like 114,000 miles per hour. If you invented anti gravity boots in your basement, no one would ever know, cause you would smack the wall at that 114,000 miles per hour. As for your conclusion, it's interesting that the trees stand straight up and that things fall TO earth when dropped. (Grass Blades are flat .....) Here the guy is taking EVERY scenario thru the 'eyes' of SpaceTime. You can view these things he talks about thru other 'theories' also. What he's trying to get at here is there is no "Field", just Gravity.
You couldn't grasp it because their attempts to explain it are erroneous. Spacetime is a concept which fails to understand the primal force that creates the other forces. Einstein's error was in not understanding absolutes vs. relativity. Everything isn't relative, if it were, the speed of light wouldn't matter, but it does. There is an absolute by which you know that space is moving, and by that you can predict the movements of anything through space.
Thats because the video treats us a rigid body or singular particles. We have th ability to have distinguish different parts of our bodies in discrete frames. We feel our stomachs get queasy because the food inside and the fluid in our ears are behaving in different ways relative to their confinements. As the observer approached the planet he would indeed feel the difference if the curvature was great enough. He would not act in perfect synchronicity to the ship, just very very close to synchronicity.
@@lukky6648 gliding works because of lift. Lift works against curvature of spacetime into the earth. Lift provides an upwards force due to air newtons 3rd law
@@apacheattackhelicopter8778 No! The Earth is not accelerating. The Earth is not accelerating towards the sun, it's just following a straight line through a curved space time that is curved by the sun's mass.
"'how was your weekend Jerry?" "ahh you know how it is, just accelerating at a constant velocity through space-time until I encounter something that stops me"
@@Dylan-ni1tc I guess when 2 things push on one another, there is more acceleration than just "deviation from a geodesic" ? ... I'm not sure, maybe the math would turn out it's equal, but ... probably not? I'm definitely not qualified to answer that... (at first I thought I thought it would always be that, but now I think that you are probably right....)
@@dagmbisrat3740 Classic physics is still being used successfully and not wrong, it is just a different explaination for what we see. Maybe send this to your teacher. If they are nice, they will apreciate that you take your education further.
There was never an apple to begin with. Newton had a brilliant mind but he had to dumb things down for others to understand hence the apple. In reality, who knows what was going through his mind.
I’ve watched your videos for years. I’ve watched long enough to believe that I’ve watched this video previously. Regardless of that, … I just got it. Or, at least, I just gained some clarity on a portion of gravity in relation to space/time. For lack of better words, the only reason I’m not cruising through space is because the earth is distorting my path. It’s not pulling on me like a magnet but rather, changing the path in front of me.
Now every time that someone mentions gravity as a force, I'll open my mouth in preparation to correct them but then remember that I hardly understood this video and smile instead.
Gravity is a force, or more precisely, it results from an imbalance in the transfer of forces by electromagnetic waves at the atomic level as a result of matter changing the properties of the structure of space. If it were just an illusion, we would not register gravitational waves; they wouldn't look for a graviton (which I think they'll never find); time dilation in the center of the earth, where gravity is not felt and light, according to Einstein's theory, travels in straight lines, would not be greater than on the earth's surface. Physicists should apologize to Lorentz's ether theory and thoroughly explain the mechanism of gravity, because Einstein's theory is only a mathematical theory that predicts results well, but does not explain the essence of the phenomenon.
Don't feel bad, this theory of Einstein seems hard to grasp, simply because its utter NONSENSE! the ramblings of an insane mind are hard for rational people to understand. This Video of Veritasuim is so full of garbage that its amazing how so many people are sucked in by the slick presentation, while they ignore their personal sensibilities. SpaceTime is a nonsense fantasy idea. And Gravity is really a Force associated to the Earth and other Planets. Imaginary math based fantasies like SpaceTime cant be curved by real Matter. And certainly cant push real matter about. But Gravity can and does. Use your own brain.
@@zofar9565 Who is? If you have something to say, just say it. You think I'm a troll? Then try explaining where my statement is wrong. Just calling people names, is NOT smart. Explian my errors or shutup!
Yeah maximizing clickbait. Which is why I didn't watch this video, because it's some clickbait BS like "centrifugal force doesn't exist lolol". I know it's petty but this really annoys me.
@@dejayrezme8617 Lmao how is it clickbait if the whole video was entirely the title , which being........ " gravity is an illusion ". I guess you wouldnt know that cause you didnt watch the video 😅.
Yeah I know I'm commenting a lot. Derek, the relativity equation you wrote on the whiteboard, that section just showed like a brilliant understanding of it for you and you shared it well. It was like a relief, you're helping folk understand the basics of it but "it" is usually not easy to understand, even the basic foundation. You also helped me contextualise my understanding of things with the general understanding of a generally smart person (external to me, I mean I understand the things I'm experiencing through my personal work on these matters but explaining them to an external intelligence is more difficult). This is a great video.
The "curve" is a way to represent acceleration outside your frame of reference. To remain stationary relative to something else, the acceleration within your frame of reference must balance that outside.
@@hoodyk7342 He was kind of a fraud, but most of his “theories” were correct, just because he possibly stole other scientists ideas doesn’t mean he was incorrect.
Veritasium, I have a question. If light does bend while accelerating for us, then doesn’t that mean that the upper part of light travels more distance than the lower portion. If this is true then doesn’t it disapprove Einstein’s special theory of relativity.
Special Relativity does not apply in curved spacetime. That's where you need General Relativity. Special Relativity is the special case of flat spacetime.
"More distance" measured how? It's the space itself that's curved. There is no undeformed "external space" (with a perfectly straight ruler) over which the curved lines are drawn.
After watching this video I couldn't stop shaking my head due to the fact that I just realized Einstein was way ahead of his time like imagine if he was here today. Legend says that I am still shaking my head from amazement.
I think it was a different way of living back then. From documentaries and audiobooks I've consumed over the last decade, one thing that kept surprising me was how young so many scientists of past eras were, AND, that they often made great contributions in multiple fields. There was no TV after school, evenings & weekends. It was a harder time for many and perhaps these chaps were more aware/grateful for their privileged education. I guess what I'm saying is people had less distractions with more motivation & time to move through the subjects. I think they were far better educated than us at equivalent ages - at least those who managed to get an education.
@@chocolate_squiggle More like the problems they were solving were much easier than the ones we're left to tackle today. Even with our superior education, we still need more of it to make progress because almost all the low-hanging fruit is gone. Now, this isn't to say our education system is perfect; it's anything but, to the point that allowing students to skip lectures and do literally anything else with their time raises GPAs by over 15% (twice that for students of colour). But we also know that IQ is, near as we can tell, purely a measure of socioeconomic factors like nutrition and education rather than anything genetic (yes, IQ is highly heritable, but lots of non-genetic things are inherited), and it keeps going up; people at a given age do still keep getting measurably smarter every year and every generation as long as they are given access to the shoulders of giants. Despite all our many problems and issues, we're still getting smarter faster than the problems we're faced with are growing more difficult. We could definitely be doing much, much better, but it's reassuring to know we at least aren't doing bad.
I’ve watched this video tons of times. In the way it’s explained, there’s always a second where I can truly grasp the reality of this… it’s so abstract for me, though, that it quickly fades. I think it would be nice to see an illustration of the geodesics in curved space time similar to how the earth animation was done.
A person in a rocket ship whose path appears to "bend" to an external viewer when the rocket ship gets near a large object is actually still traveling in a straight line through space. It is space that is bending and therefore there is no "force" changing its trajectory.
I'm an apple 🍎 ... I was just chilling the other day and suddenly my tree detached and started moving up and before I knew it a freakin scientist just came straight at me from the bottom and rammed me with his gigantic head.... Like what is wrong with that dude... Thanks to him now no one will eat me
Saying that gravity is an illusion and that it is simply a symptom of curvature of spacetime is a bit of an oversimplification. The truth is that we do not understand gravity. We can observe and predict the effects of gravity but we do not fully understand it which is why there is such a problem as soon as we go from macro to microcosmos of quantum physics and quantum gravity and why the idea of gravitons was proposed in the first place. Also, there is no such thing as being at rest outside of the effects of gravity. There is always some gravity well you would be in. Even if there was only one star in the entire universe and you were on the other side of the observable Universe, you would still be in the gravity well of that star, no matter how shallow it would be. The only reason we talk about escape velocity is that you manage to escape from a deeper gravity well into a more shallow one.
Also, one of the main reasons for the creation of String Theory was to try to unite the two with 10 dimensions and an extra parametric or time dimension. Basically we have no clue why gravity does the things it does because it looks like an acceleration from an Einstein reference, but from a quantum physics perspective it does even weirder things.
@@KRYMauL why do i get the feeling we are missing something crucial when I think about this stuff, and the fact that we only ever experience the illusion our brain creates to represent reality makes me feel like it would be like light to a creature that hasn't evolved sight.
I was just thinking this, with the right level of fundamentally misunderstanding this video I could see it feeding into the FE crazy ideas of the world just accelerating upwards at 9.8m/s squared.
Nonlocality and "general" relativity is about the level of flat earthers, denying all science and energy conservation laws. How will one prove that space is a magical gelly of extra time or instant energy transfer? Gravity is an acceleration yes, because a force is the outcome (the field of) of particle charge due to spin states and vibratory conditions. Relativity is the opposite of anything general.. It is by being relativity, "special"(localities measured)
@@deltablaze77 Isn't that what they believe, tho? Doesn't the pizza just fly through space propelled by dark energy or whatever flavor-of-the-month untestable excuse they can come up with?
That's not space, it's an airplane they nose dive into the ground which makes you look and feel weightlessness before pulling the plane back up and leveling it out.
Actually, he did not fly into outer space. If you watch the sequence again carefully, you will see that he uses computer animation to provide the illusion of flying in a rocket ship into outer space.
A few questions if I may: 1. If gravity is not a force but rather objects are following a straight line through spacetime, the why doesn’t the entire earth free fall to its center of mass and create a black hole? (2) If gravity is not a force then why are scientists searching for gravitons? There would be no force carrying particle becase gravity is not a force 3. Do gravitational waves travel at the speed of light? If so, then gravitons would have to be massless like photons, correct? 4. Since standing on the earth is an accelerating reference frame, then ALL accelerating objects must be exchanging gravitons, e.g. your accelerating rocket with the ejecta it produces. I know this is wrong; where does my reasoning break down?
Here I am watching this video for the 4th time trying to better understand the concept, while Einstein thought of this in 1915 with only a fraction of the technology available today. It is mind boggling how smart he was
Apart his genius, I like to remember to people that THINGS do not evolve like in movies, we are the same intelligent humans since 10k years, the only things changing are the tools we have at our disposal, 4k yo Einstein is a real thing 😂
I watch this video again and again every couple months to understand it more. Also on my 4th watch, I think I just accepted how to the falling man, everyone else is accelerating up
@@fabriziogiordano2405actually wrong, contrary to popular belief, thanks to the mass utilization of ethyl as gas fuel sometime ago, our generation and at least 3 generations before are dumber than our ancestors.
That’s maybe why if your really clever they call you Einstein, he was really clever, your mind was boggled because you obviously didn’t realise he was really clever, and technology would not have helped him as it was mostly theoretical.
He didn't go to space. He went on a plane that moves in a wave (up/down) motion. When the plane goes down as fast as gravity's acceleration, then the people inside the plane feels weightless and are in freefall.
@@suricanlp Science teachers (might/should) know this. However, by "historical analogy", students are usually taught ~18th century physics before ~20th century physics, because its just easier to learn these simple models (gravity as a force, etc) before getting deeper into things.
@@tapksa This. It's better to teach a classical description of the atom, maybe admitting that there is more to the story, before a quantum mechanical version.
I know it might be a stupid question, but since we are moving around the space time, are we like in a video with a frame by frame? If we ever go back to the exact location of the past in space, will it be something there? I am sure im not correct. But if we are moving around the space time it sounds like a recording a video on a video tape. The time space is just a space where we are moving around the space getting recorded?
well, none of the trajectories that we can go in our space-time can get back _exactly_ to the same location, so we'd need an external (to our universe) observer to tell us what is going on.
@@ichpokhudezh Can we leave entangled particles to the x,y,z point and look at it after some times? Since it ignores the time factor, can we look at how it is once we leave the particle A to a certain point. Using B to check the status?
@@Djdjrkejcjfjf a "point" is described by 4 coordinates in the space -time (x,y,z,t). Entangled particles don't ignore time per se - their lifelines will include the fourth coordinate and it changes.
'acceleration is a deviation from a geodesic' this really help me grasp things a bit more. I probably need to spend some time thinking about it but I feel its key to grasping GR at least at a basic level.
Yes! It was the final missing puzzle piece for me after scratching my head for a very long time about how the earth could possibly be accelerating outward without expanding.
I’m confused, shouldn’t orbits be circles? I know that Kepler explained they’re actually ellipses but if we had a sphere that would bend space time shouldn’t the space time line be a circle around it? Wouldn’t we need a force to deviate an object into an elliptical orbit?
The fact that he predicted most of my own questions with his white-shirt self made me feel surprisingly smart for noticing the "inconsistencies" before they were shown to me, thanks for the video man :D
This stuff is very hard to present well. However, you presented it in a way that me, a high school student, could understand it. You, sir, are a living legend.
The explanation of an INERTIAL OBSERVER really nails the concept better than anything else I’ve seen or read. This video really is a masterpiece at conveying gravity.
For anyone who's curious, The first question you should be asking is "What is Space/Time"? Space is the observable dimensions (a cube has 6 sides), Time is change happening to those dimensions (The 6 sided cube moves from here to here). What is a force/gravity? 9.8m/s/s. So you have M, which is dimension, and time, s/s, and since it's s/s that makes this force a curve on a graph. Therefore a force is space/time curved and this entire video is explaining absolutely nothing. This took me 3 seconds to figure out and it makes me cringe that this explanation even exists or that I ever had to think about this. Definitely not finishing the video'
@@rhyvehr the very idea of "spacetime" is ludicrous. Non-euclidean geometry is nothing but a mathematicians wet-dream and is neither substantiated by logic nor empirical reality. there are only 3 dimensions and time is INDEPENDENT of those 3 (length, width, height) which are DEPENDENT....Einstein was a mad man who didn't understand basic logic and his insane relativistic THEORIES are the result. A x B = B x A is a logically invalid statement LWH are NOT independent like time is....all of this is unfortunately the basis on non-euclidean geometry and so called relativistic physics (anti-physics really) which is the height of absurdity...DESCRIPTIONS without any proof is NOT an explantation. Descriptions are NOT explanations. They are mere superstitions. "Curved" spacetime. hahahaha...and the statement Veritasium makes about "all claims of relativity have been proven/never debunked" is complete BS....there has NEVER been a proof for relativity and all experiments have not only failed to prove relativity but.have actually disproved it. Its so funny to me how 99.9% of the population will read a studies abstract and conclusion but never question the most important section (the METHODS section)...read the METHODS and you'll find that there is not even a shred of logical or empirical evidence for any of the claims made in the so called "scientfic" papers that get published these days. A wise man once said: "If you can't dazzle them with brilliance, baffle them with bull####"
@@rhyvehr Consider what is the man (AND THE EYE ON BALANCE) who IS standing on what is THE EARTH/ground. Consider TIME AND time dilation ON BALANCE. What is E=MC2 is taken directly from F=ma, AS the stars AND PLANETS are POINTS in the night sky ON BALANCE. This CLEARLY explains and proves the fourth dimension. c squared CLEARLY represents a dimension of SPACE ON BALANCE !!!! Indeed, E=mc2 is taken directly from F=ma; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches it's revolution. Notice the TRANSLUCENT blue sky ON BALANCE. Consider what is THE EYE ON BALANCE, AS c squared CLEARLY represents a dimension of SPACE ON BALANCE. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS what is E=MC2 is taken directly from F=ma; AS GRAVITATIONAL force/ENERGY is proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE. “Mass”/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent with/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). Accordingly, ON BALANCE, what are OBJECTS may fall at the SAME RATE. By Frank Martin DiMeglio
@davidmudry5622so if something has a lot of mass it will be hard to accelerate right? So then if you think about how gravity accelerates things, then it should be harder for it to accelerate a more massive object. However, the more massive object is pulled stronger by gravity. The pull by gravity and the resistance due to inertia cancels out with any sized object. I haven’t studied physics to know why, but the relationship is proportional.
Me too. Standing up literally feels different for me after watching this video. Like I'm being constantly being accelerated through spacetime by invisible rockets below the ground, constantly escaping each geodesic that wants to bring me to the center of the Earth. Those two m's he mentioned have switched in my perception of gravity. I no longer feel like the more mass I have, the stronger Earth's attraction on me will be. Rather, I feel that the more mass I have the more inertia I will have, thus making the work of those invisible rockets harder, which in turn feels like more force applied to my feet. Truly mind boggling!!!
@@michaelhoogendoorn3179 it challenges the conventional belief of gravity as a virtue of mass, so interaction with electromagnetic radiation isn't something thought to be possible in Newtonian physics. Or maybe I'm wrong and im talking ahead of myself but that's what I got from this video.
So that means the band Kraftwerk means something like "workforce" lol, I always thought kraft meant crafts, as in arts 'n crafts, and figured the band was pretentiously called "work of art"
Wow I actually like this explanation better! I NEVER agreed with the normal explanation of space time with a stretched fabric! Because I always thought "if this is gravity, why aren't we tucked into the sun?" Thank you for this different view.
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
Here's a question I've seen a lot in comments: OK, I'm accelerating up but then shouldn't someone on the other side of the globe fall off? No, here's why:
Either watch again from 8:28 or read what I've written below...
Spacetime is curved - it curves the opposite direction on the other side of the Earth.
Neither us on this side of the Earth nor they on the other side are changing our spacial coordinates - we're not moving up, they're not moving down - Earth isn't flying into one of us.
BUT we both ARE accelerating. In curved spacetime you have to accelerate just to remain stationary.
The traditional definition of acceleration is something changing its velocity.
In general relativity you have to embrace a new definition of acceleration: it means deviating from a geodesic - not going on a straight line path through spacetime. Near the Earth a geodesic is a parabola so unless you're moving in a parabolic arc (like on a zero-g plane) you are accelerating.
This definition is the same as the old one so if you're accelerating in deep space then your velocity is changing.
*BUT*... if you are near a large mass you are in curved spacetime, now acceleration your velocity is changing. You can stay stationary relative to Earth's surface and still be accelerating. This is because your acceleration should be measured not relative to the Earth's surface but relative to free-falling objects - they are inertial observers.
Imagine this - I'm in deep space and I make horizontal rows and rows of stationary golf balls. Then I hop in my rocket and accelerate up through them. Just think about what that looks like. Now my rocket is back on Earth just sitting there. I freeze time for a sec and make horizontal rows and rows of golf balls up into the atmosphere. Now unfreeze time. What do you see? If you just look at the golf balls and the rocket ship it looks the same as the situation in space where the golf balls were stationary and the rocket was accelerating. Einstein's point was the golf balls have the better claim as the "stationary" thing since their experience is just like the golf balls in deep space - no forces experienced. The rocket on Earth is just like the rocket in space. It feels a force and hence an acceleration.
@Veritasium "In curved space time you have to accelerate just to remain stationary"
Seems more like physicists have become so enthralled by these mathematical equations they are willing to throw out observable reality for them. I have two options, I can either call a lack of motion "acceleration" (which contradicts the clear definition of the term) or question the math / model I'm using to describe the physical world.
First 😀
@@sarthakgandhi324 not first
@@destroya3303 throwing out the way things appear to be is core to physics. Aristotle said an object's natural state is to come to rest. Newton figured out it was friction making everything come to rest and without that force everything would keep moving in a straight line with constant velocity. You are being Aristotle in this situation.
@@destroya3303 You do understand that motion itself is relative? When you don't accelerate, you don't feel any force, and so far the falling object doesn't feel it (well it does feel air but it's a friction and it's a force), while you stationary - do. And you move up relative to falling object, it's just that you climb curved spacetime same amount that it curves
This video is a masterpiece. The best explanation of gravity on the internet currently.
I love your Videos too Especially The Speed of Light
I like black fire experiment
Love you videos also agreed
Ok
I love your Videos too
Mom: "son did you fall down?"
Son: "No mom, you fell up!"
I simply became a temporary inertial observer.
simple explanation
lol
"I was following my true path... through spacetime."
@@Lime-rr6zf no.. you didn't.. cuz you didn't actually fall DOWN from a height.. you just fell down ..
As long as I've known Derek he's consistently asked the difficult questions. This video challenged me, and taught me many things. I want to try the eclipse photo now. Impressed Eddington did it in 1919.
First one to reply...✌
I like your videos 🤗
You could totally make a video on that I think it would be cool.
Quoting the wise Sheev Palpatine - DO IT!
Quoting the wise Shia LaBeouf - JUST DO IT!
Love to see youtubers support one another. It’s amazing!! Love your videos destin!!
"In 'curved' spacetime you need to accelerate just to stand still", GENIUS
Could be a chat up line if the person you were chatting up was fully fluent in Nerd
@@garynoel037 I don't understand 🤨
That's not going to confuse anybody
@@garynoel037 I don't get it.
One of the best lines in the video fr.😂
So Newton actually rammed his head into that apple. Rude.
Poor apple was just trying go on a straight line in spacetime, minding its own buisiness.
*@Colton Smith* Lmao you made me laugh🤣
Hahahahahaha
+Cotton Smith While wearing a bucket on his head.
This is the kind of comment I live for 🤣
Love how Derek is blasting himself off into outer space so that we understand gravity better, he always works so hard for his audience 😢❤
He will be remembered 😢😢😢
The true mvp is the Cameraman 😔
@@fridolfgranq fax
Also copped a boot to the face in that weightless simulation plane.
Yes, I want 2 Accelerates!! Immediately! Right! Now! Yesterday! dammit! What do you think I’m waiting around here for?
At this point, Newton throws his apple at Einstein.
😂
and the apple flies through spacetime
@WolframaticAlpha ?
@WolframaticAlpha xbox fanboy smh
No man, Einstein falls towards apple but I like Samsung
"I'm not drunk, I'm just deviating from a geodesic"
Ha ha 😂
The fact that you can make videos on topics that are so out of the ordinary, and most people would never be able understand it without years of education, into a short video that is free to watch and actually understandable is amazing
That's what we internet should have been for
I'm high schooler from india preparing for JEE and understood everything in this video!
I don’t think people without years of education will understand this video too, but okay
I still dont get it..... And you dont get it too.....
@@okktok no I'm 14 and I understood everything I just needed to commit and re watch it 5-6 times to get every single term and to kinda start viewing things differently
"Gravity is an illusion"
flat earthers: "WRITE THAT DOWN WRITE THAT DOWN"
'theyre rubbing it in your face'
Gotta love that predictive programming
Also flat earthers: chek maite, won uf yoer gais sed gravitee is faek
But gravity is a lie rock climbers die annually from not being attracted to the cliff face.
@@sebastianstewart6894 rock climbers are attracted to the earth more than they are too the rock they are climbing. ofc they'll fall towards the ground
I never really could wrap my head around the concept of curved spacetime, but this video changes that. Thank you very much for showing me in a way I could understand, this actually changes everything for me
It literally shits on whatever Newton has told us. This is game changing.
@@ohwow2074 like actually, its insane. not only that it makes so much sense too.
@@landronsc The fact that in order to create force you need to spend energy (electricity, etc) but gravity doesn't need energy. The Sun doesn't lose energy while holding the whole solar system around itself for 6 billion years. The earth has had gravity for 5 billion years and it still has energy left in it. This shows that gravity is not some type of force. It's something that the existence of matter creates. The very existence of matter dilates time and curves the space around it.
@@ohwow2074 Actually, it is largely coherent with Newtonian physics. Essentially, Newtonian physics is what General relativity simplifies to under normal everyday circumstances. It is extremely useful and should certainly not be trown out the window unless you're stupid or into mental BDSM.
@@Релёкс84 i find his explanation lacking a few crucial aspects... maybe you could fill me in
If you push in one direction, the reaction can't be omnidirectional, or am I missing something? At least in the case of celestial objects. (Maybe slamming a melon with a hammer can result in omnidirectional explosion haha, but this is different I think)
So, what about people and stuff on the other side of the globe, seems like they would either fall off or just be left into dead of space.
He also doesn't explain why would objects "fall" towards the center of Earth at all. (Objects do go towards the center, right? or that's the myth).
It would make sense if the objects traveled towards the gravitational well (towards the center of it), while also being pushed by Earth's motion, but didn't mention that, at least not directly I think.
But yeah, the opposite side of Earth, I need an explanation for that.
Because, intuitively, if you rotate a ball in spiral, I feel like the only spot that would push and make objects cling to the ball is what? 5-15% of the surface? idk, but the spot would also change constantly...
I’m starting to realize if any of these videos were elaborate April fools jokes, I would never be able to tell
Rather like the relativistic principle itself.
Just checked the date of the video, just to be certain
@Dancing Swords Because it contradicts observable things, like things falling towards the ground, by giving new definitions to words like force, gravity, acceleration. Even if all is true you can't steal words you must invent new words to describe them.
@Dancing Swords Einstein always said atomic bombs are not possible.
@Dancing Swords So why do the army use parachutes?
You better explain them: "There is no gravity, look at me jump without parachute."
Link here how you explain and jump. Thanks.
As a stem cell researcher I've recently read about studies investigating why organisms need gravity to develop and would have great difficulties in spaceships. Early attempts of growing plants in spaceships failed since plants need gravity for their root development. However, even single cells need gravity for molecular processes. For example, the cytoskeleton (which help cells to maintain their shapes) and several protein families have been shown to be affected by the absence of gravity (it would actually be funny to make a video about that myself). Great video as always!
so you are saying that life developed under continually accelerating circumstances and requires continued acceleration for biological life to not fail? energywavetheory.com
Gov Corp Watch no, those are all implications but false
Didn't they manage to grow lettuce or something on the ISS?
Yeah, gravity helps to move things around and allows buoyancy to work well.
@@govcorpwatch Isn't the earth in a constant motion and traveling thru space relative to everything else and life developped here on earth within those conditions, i guess...?
On a lighter note, this means that the apple didn’t fall on Newton’s head. He accelerated right into it.
No, Spacetime willed the collison. The word of Spacetime is truth itself.
So.... Newton's head fell onto the apple
exactly
Newton's head was in the straight line path that the apple was taking, but Newton's head wasn't itself taking a straight line path.
I thought he was just calling in geodeSick to skip work.
You made me feel that I should've studied science more seriously in my high school. I will study now.
“Do you feel weightless? No of course not” me falling off a roof: that’s what you think science boi
Very edgy boi
Underrated comment
The dedication of this man.
Explain your comment I didn't get it
@@xexstartheyoutuber2424 Derek says in the video that falling off a roof is one way you could feel weightless. Derek also assumes that if you're watching this video right now, then you probably don't feel weightless because you're probably sitting down on a couch or bed or whatever. So the guy who made the comment implied that he was, in fact, falling off a roof while watching the video, making him feel weightless.
God, dissecting jokes really isn't fun
_"Gravity is an illusion."_
Eugh, FINALLY!
*[floats off, to get groceries]*
That's not how it works. There is still an EARTH that you cannot ignore and go off floating.
Reminds me of a joke in one of the ASDF Movie.
A guy says: Screw Gravity.
Then simply floats away.
... it's much better seen than written in text, the asdf jokes are mostly visual.
Hahahaha ✌🏻
Lmao
Sorry to nitpick but he didn't say "Gravity is an illusion", he said "Is gravity an illusion?" It's a question.
“In curved space-time, you have to accelerate to stand still”
Mind. Blown.
It's makes obvious why you can't even stand still inside of black hole - space is so bent it would require FTL acceleration
@@marzi_kat i dont think ftl acceleration means what you wanted to convey)
cant wrap my head around it yet
Yeah, why would it be curved. Time is added all the time, so spacetime is everexpanding, perhaps we need to accelerate to stand still. Far fetched I know.
@@Quismo12 if you don't accelerate it will seem like everything around you is moving and you are "falling" toward earth. But if you let earth push you along it will seem like your just standing still not moving up or down.
Boy, that Chuck Norris joke about his pushups actually being him pushing the world down suddenly seems far too real.
my physics teacher: Draw an arrow showing the direction of gravity.
me: [draws nothing]
my physics teacher: What video did you see this time?
also your teacher : *tries to teach you something that maybe can't exist or maybe we never will be able to understand completely*
cringe
@@YorinSenpai well it doesn't really matter. Especially with how low level the physics u get taught in school is. 99% of the time u get the watered down version cus that's all that's needed
Usually school starts with teaching you the things that have already been proven wrong like the bor atom model. Just because humans are still able to understand that - in contrast to quantum physics.
@@frankkrumnow7194 And it's really all that's needed unless you pursue something more scientifically minded. If you take chemistry you will learn that everything you thought you knew was actually a simplification multiple times. 😂
The thing is that often the simple models and theories describe what is happening just fine for almost everything we need it to.
Been through college in physics and physical engineering and honestly no professor would explain in such an interesting and somehow profound way. Thank you
Could you help me with a simple question?
What makes engineering different from physics?
@@mmoonchild276application
Hey if you don’t mind me asking, which uni/college did you go to for physical engineering, that is a major I’m interested in and from my research, very few colleges have that as an option and I will be applying to colleges next year so it would be great iylmk
@@niy._. well mine was in Portugal in the faculty of Science in Porto University
@@mmoonchild276weed out classes and corporate politics
Good animations ❤
Ray traced huh
#India
@@GareebScientist ooho
#India
Hey man, love your work .....
One of the top most videos of Veritasium. I have seen this more than 25 times
7:58 "You are not an inertial observer."
Me, watching this while skydiving: You sure about that?
Ummm... no. maybe initially as you leave the plane, but you soon reach terminal velocity because of air resistance and cease accelerating in relation to the Earth.
@@pedtrog6443 It was a joke.
@@pedtrog6443 you're out of line, but you aren't wrong
@@konk_kreet is that a geodesic pun?
@@kevinchang8090 Sort of yea
Veritasium: You can accelerate even if your spatial co-ordinates do not change.
Me: Say what now?
Yeah was hoping for better clarification since this contradicts the common concept of "acceleration".
Say sike right now
I have heard this argument before and the claim was that you are accelerating *in time* since space-time includes, you know... time... and time moves forward, we don't know how to stop accelerating through time.
Good thing to know I'm exercising even in my bed
This would mean that time would pass at different "speeds" depending on how close you are to a big pile of mass... and that's actually how it is. The bigger the mass, the slower the time. In black hole singularities time should literally stop. And no, I don't fully grasp that, it's just what I remember from watching so many pop science stuff about relativity.
"Come on, Doc, I can't be accelerating if my spatial coordinates don't change."
"You're not thinking fourth-dimensionally, Marty!"
I finally understand now the curved spacetime. I've watched this 3 times already and now I finally got what he means by gravity is just an illusion. I believe it, when you fully understand how it works. :) Thank you, Derek. I love it when I learned something that you've been asking yourself your whole life. This video explains it all very well. Great video.
Did not expect you here.
@@fogone1haha
When mountain climbing, try not to become an inertial observer.
slightly cursed comment
@@sohamacharya171 that’s the point
just who tf ruined the 69?
@Jay Pace Send pics.
thats cursed
Props for the camera man who went through space to film this video
That's okay, he knew that nothing ever happens to the cameraman
@@sephikong8323 lol
Underrated comment
super(props)
render(){
}
The cameraman didn’t go through space because it was animated.
Officer I can't walk in a straight line because we all walk in geodesics.
Geodesic of a drunk is called collapsoida.
@@efimkrivov jailoida
NICE ONE! XD
Except that all geodesics are straight lines
The cop kills you right then and there for being a smartass
I thought this was a new video after changing the thumbnail
Rocket Man Derek just floating around with a single molecule of ethanol.
@Ben Rowe He was flying HIGH
Gotta drink responsibly
That's way too little
Kk
I’ve never understood the concept of bending space time around masses until this video. And now it makes sense how light gets trapped in black holes despite having essentially no mass
my understanding of this is, mass shapes space, and matter (mass) follows the shape of space, and we give this following of space the name gravity. That’s how understand it?
*correction
Light doesn't have essentially no mass, it has precisely no mass. Photons are massless particles.
@@jwjustjwgd Yes. Thank you!
I'm confused. How does a laser exert force on an object if the light beam has no mass?
@@captainmaim Light does have a mass, it does not have a rest mass. E = mc^2; m = E/c^2.
No officer. I wasn't accelerating unnecessarily. I was trying to stay still at the light.
8:34 no thats not me , because i am watching this from the sky
*As a Harvard Neuroscientist, here's another mind-bending thought. When you rotate your head, you are NOT in control of the primary directionality of your eye movements.* Try this. Keep your head still and look at your finger while you shake your finger left and right; your finger will look blurry due to motion blur. Now, instead, keep your finger still and look at it while you simultaneously shake your head left and right, which will demonstrate - in this situation - that you are still able to maintain a stable image of your finger. This is because your sense of your head in space - your vestibular system - has a hardwired reflex to move your eyes in the opposite direction of your rotational head movements. This vestibular-ocular reflex (VOR) ensures automatic dynamic stabilization of images during head movements. You are not consciously doing this, and you can not consciously override it. The VOR is truly a reflex and, interestingly, does not depend on vision. During head movements, you will still have a strong VOR if you are in the dark or if you have your eyes closed. Your VOR originates from your vestibular system, which is located in your inner ear right next to your cochlea - your organ of hearing. Your vestibular system for rotational head movements consists of a series of three fluid-filled semicircular canals that have little "hair" cells inside the canals. When your head moves up-down (pitch), left-right (yaw), or shoulder-to-shoulder (roll), fluid inside the corresponding semicircular canal flows. This head motion-induced flow bends the hair cells within the canal to ultimately send electrical impulses to your hindbrain. These electrical impulses - encoding head movement - then talk to parts of your brain controlling eye movements, which connect to your eye muscles to reflexively move your eyes in the opposite direction of your head movement. So be thankful that your sense of your head in space - your vestibular system - takes care of maintaining a stable image of the world even when your head bobs around as you walk. Otherwise, walking would be a blurry journey of craziness. Videos coming soon.
That's crazy. I had no idea, but I guess it makes sense. Also, subbed and looking forward to when you start posting vids!
That's why you can't just put the camera in a video game into the eyes because it would make you nauseous seeing the camera move around all the time.
I never thought about how if someone else holds the phone its hard to read text, because the phone is moving like finger in the experiment. But if the phone is stationary, you can read it even if you are shaking your head :0
"This vestibular-ocular reflex (VOR) ensures automatic dynamic stabilization of images during head movements. You are not consciously doing this, and you can not consciously override it."
I can move my head from side to side while looking at my finger (or another static object) and see motion blur, at least if I shake my head fast enough. I can't focus on my finger without it blurring if I move it though, unless I move it really really slowly.
Yeah. This video gives a nice explanation ruclips.net/video/DkaJ6iK2CJc/видео.html
I was a physics major for my undergrad and space time was something that I never understood as well as I wanted. I understood how it worked but was never able to totally rationalize it to myself. This video helped me so much. Thank you!
Would you believe that Elen Musk (Space-X) had never took collage in rocket science, nor engineering...but he says he took physics, "And that helped...", stated, Elen Musk.
Gravity exist by evidence of: (1) why does the compass point to the North; and (2) the surface of planet Earth moves eastwards from a rotation at about 560 MPH, at the same time the planet Earth 🌏 is swirling up and down and all around while the planet Earth is traveling about 1,600 miles MPH around the Sun...hence, resulting into gravitational energy upon planet Earth and also some form of gravity upon all planets and moons throughout the universe, as well as making all plants round shape and not flat, triangle or other shapes then just round shape...correct ?
@Keven Heinz holy man, im not sure if Im too dumb to understand this smart guy, or the guy is dumb while trying to sound like he is smart, all while not being able to convey ideas properly.
@@billythekid5628 your math is WAY off. and your 1. is not true. That's a magnetic North, which changes. AND Gravity isnt the same force, the world over. There is a map that shows the gravity the world over. Ive wanted to take a known GRAM around using that map and see for myself.
Your 2. The Earth, at the equator, is traveling exactly 1,000 miles an hour. (That's why a day is 24 hours) cause the earth is roughly 24,000 miles around.
We are traveling 67,000 miles per hour around the sun.
In total, YOU, yourself are moving something like 114,000 miles per hour. If you invented anti gravity boots in your basement, no one would ever know, cause you would smack the wall at that 114,000 miles per hour.
As for your conclusion, it's interesting that the trees stand straight up and that things fall TO earth when dropped.
(Grass Blades are flat .....)
Here the guy is taking EVERY scenario thru the 'eyes' of SpaceTime. You can view these things he talks about thru other 'theories' also.
What he's trying to get at here is there is no "Field", just Gravity.
You couldn't grasp it because their attempts to explain it are erroneous. Spacetime is a concept which fails to understand the primal force that creates the other forces. Einstein's error was in not understanding absolutes vs. relativity. Everything isn't relative, if it were, the speed of light wouldn't matter, but it does. There is an absolute by which you know that space is moving, and by that you can predict the movements of anything through space.
You have the equation, now - from here on out it's just plug and chug.
You cant expect the average person to get how it works. The average person thinks the sun is stationary
Trying to explain this to a friend is a crazy challenge. I've tried. I think it's more confusing, this is such a great explanation
Thats because the video treats us a rigid body or singular particles. We have th ability to have distinguish different parts of our bodies in discrete frames. We feel our stomachs get queasy because the food inside and the fluid in our ears are behaving in different ways relative to their confinements. As the observer approached the planet he would indeed feel the difference if the curvature was great enough. He would not act in perfect synchronicity to the ship, just very very close to synchronicity.
@@walteroreilly8963 that actually makes a lot of sense , just confused about how gliding would work if this theory was true
Basically, space is distorted and your movement through time is what causes you to fall to earths core
@@lukky6648 it's not "if". This theory IS true, general relativity accurately explains gravity at these levels. This isn't some guess. This is reality
@@lukky6648 gliding works because of lift. Lift works against curvature of spacetime into the earth. Lift provides an upwards force due to air newtons 3rd law
jokes on you, i watched this in a crashing airplane so yes. i am a inertial observer
Rest in peace, Hunter
What a useless lie
@@nikhilvdhoni2161 it's called a joke
@@Skystrike70 I was just joking
@@nikhilvdhoni2161 what a useless lie
*"You are not an inertial observer"*
Astronauts watching this: Am I a joke to you?
Is the Earth an inertial observer? What separates me from the Earth except time and definitions of physical object boundaries?
You are in a Game called MAYA
@@MartinHindenes from what I remember from school.. No, Earth is not an inertial observer since its accelerating.
@@apacheattackhelicopter8778 No! The Earth is not accelerating. The Earth is not accelerating towards the sun, it's just following a straight line through a curved space time that is curved by the sun's mass.
Whoo naruto fan😃😃
"'how was your weekend Jerry?" "ahh you know how it is, just accelerating at a constant velocity through space-time until I encounter something that stops me"
" acceleration is a deviation from a geodesic "
- core point
not all acceleration tho
@@Dylan-ni1tc I guess when 2 things push on one another, there is more acceleration than just "deviation from a geodesic" ? ... I'm not sure, maybe the math would turn out it's equal, but ... probably not? I'm definitely not qualified to answer that...
(at first I thought I thought it would always be that, but now I think that you are probably right....)
@@Dylan-ni1tc all acceleration as observed from an inertial frame. Bodies in freefall only accelerate with respect to non-inertial frames.
Can someone tell me what that means
@@мммт69 ... I think it's the point of the video? - Best way to be told what it means is to watch the video. :D
Imagine having a physics class where you learn gravitation fields and forces then go on to watch this video right after...
My physics teacher is making our class example this and how dose this work lmao.
"everything you learned was a lie"
This exactly what happened to me rn 😭 idk if I should confront my teacher😭
I'm currently in a physics class, hope this doesn't mess me up
@@dagmbisrat3740 Classic physics is still being used successfully and not wrong, it is just a different explaination for what we see. Maybe send this to your teacher. If they are nice, they will apreciate that you take your education further.
So newton wasn’t observing the apple, the apple was observing him
General relativity:
Hello there
That poor apple was just an inertial observer, and Newton accelerated up and headbutted it.
Newton used Linux
There was never an apple to begin with. Newton had a brilliant mind but he had to dumb things down for others to understand hence the apple. In reality, who knows what was going through his mind.
@@matigekunstintelligentie 😂😂😂What do u feed your brain!!🤨😂
I’ve watched your videos for years. I’ve watched long enough to believe that I’ve watched this video previously. Regardless of that, … I just got it. Or, at least, I just gained some clarity on a portion of gravity in relation to space/time. For lack of better words, the only reason I’m not cruising through space is because the earth is distorting my path. It’s not pulling on me like a magnet but rather, changing the path in front of me.
Whenever my mom says I am being lazy and not doing anything I will tell her that I am accelerating.
Not just accelerating you are also moving with a constant speed because the earth is rotating
😅😅😅😅😂😂🤣
tell her that you are busy coverting oxygen into carbon dioxide
good one
@@user-tb8zt7wg4p There's leap seconds because earth doesn't rotate constantly, but it doesn't matter. I just wanted to tell you about leap seconds
Now every time that someone mentions gravity as a force,
I'll open my mouth in preparation to correct them
but then remember that I hardly understood this video and smile instead.
Gravity is a force, or more precisely, it results from an imbalance in the transfer of forces by electromagnetic waves at the atomic level as a result of matter changing the properties of the structure of space. If it were just an illusion, we would not register gravitational waves; they wouldn't look for a graviton (which I think they'll never find); time dilation in the center of the earth, where gravity is not felt and light, according to Einstein's theory, travels in straight lines, would not be greater than on the earth's surface. Physicists should apologize to Lorentz's ether theory and thoroughly explain the mechanism of gravity, because Einstein's theory is only a mathematical theory that predicts results well, but does not explain the essence of the phenomenon.
@@kashubia2509Einstein spoke about gravitational waves, as ripples in space time. So the nane doesn’t matter. The effect is what’s important.
At 7:54 when he said "Well, I mean, do you feel weightless?" I purposely jumped and fell so that I could say yes.
The only thing that remains stationary is my understanding
Copied
Don't feel bad, this theory of Einstein seems hard to grasp, simply because its utter NONSENSE! the ramblings of an insane mind are hard for rational people to understand. This Video of Veritasuim is so full of garbage that its amazing how so many people are sucked in by the slick presentation, while they ignore their personal sensibilities. SpaceTime is a nonsense fantasy idea. And Gravity is really a Force associated to the Earth and other Planets. Imaginary math based fantasies like SpaceTime cant be curved by real Matter. And certainly cant push real matter about. But Gravity can and does. Use your own brain.
@@xiaoxiao-kg5np Unfunny troll
@@zofar9565 Who is? If you have something to say, just say it. You think I'm a troll? Then try explaining where my statement is wrong. Just calling people names, is NOT smart.
Explian my errors or shutup!
@@xiaoxiao-kg5np Still a unfunny troll 😭😭
Veritasium changing video thumbnail 4th times. bro we watch video whatever thumbnail it is
he did a really good video about it last year ruclips.net/video/fHsa9DqmId8/видео.html
Yeah ruclips.net/video/ub82Xb1C8os/видео.html
Yeah maximizing clickbait. Which is why I didn't watch this video, because it's some clickbait BS like "centrifugal force doesn't exist lolol". I know it's petty but this really annoys me.
@@dejayrezme8617 i mean that wasnt the video at all but ok. i dont hate on youtubers for playing the game. if i were in their shoes id do it too.
@@dejayrezme8617 Lmao how is it clickbait if the whole video was entirely the title , which being........ " gravity is an illusion ". I guess you wouldnt know that cause you didnt watch the video 😅.
"a falling man appreciates the gravity of the situation"
but he doesnt experience it
@@cl4655 underrated comment
Confucius plays
I’m sure he’d be feeling quite the opposite of appreciation.
It's not the fall the kills you, it's the sudden stop, will really it's the sudden acceleration.
Yeah I know I'm commenting a lot. Derek, the relativity equation you wrote on the whiteboard, that section just showed like a brilliant understanding of it for you and you shared it well. It was like a relief, you're helping folk understand the basics of it but "it" is usually not easy to understand, even the basic foundation. You also helped me contextualise my understanding of things with the general understanding of a generally smart person (external to me, I mean I understand the things I'm experiencing through my personal work on these matters but explaining them to an external intelligence is more difficult). This is a great video.
"In curved space-time, you need to accelerate just to stand still". Mind. Blown.
Curved space time, what does that even mean?
@@Bretaxy GEODESIC
@@Bretaxy I assume it means the space time that's curved due to mass, such as space time around the sun or the earth
The "curve" is a way to represent acceleration outside your frame of reference.
To remain stationary relative to something else, the acceleration within your frame of reference must balance that outside.
Yep this is when my head exploded
“Are you in an inertial frame of reference? No!”
*The people on the ISS watching this video:*
"dId YoU jUsT aSsUmE mY fRaMe Of rEfErEnCe?"
Me:~jumps~ . . . Well now I am
I THOUGHT THE SAMEEEEE
I didnt... Understand...
Well, even the ISS is "accelerated" due to air resistance
"Einstein tells us one thing: focus on the experience of the observer"
He really was a genius
Now, all marketing is based on this
If you really want to know how cravity work I highly recommend this video ruclips.net/video/ijXBdUxMnCE/видео.html
It's not marketing
But also he was a plagiarist and a fraud apparently
@@hoodyk7342 No, he was not. Don't believe everything you read on the Internet.
We are 3 comments in and this is the most random reply’s ever
-a random k pop link and two people arguing that Einstein was a fraud
@@hoodyk7342 He was kind of a fraud, but most of his “theories” were correct, just because he possibly stole other scientists ideas doesn’t mean he was incorrect.
Veritasium, I have a question. If light does bend while accelerating for us, then doesn’t that mean that the upper part of light travels more distance than the lower portion. If this is true then doesn’t it disapprove Einstein’s special theory of relativity.
Special Relativity does not apply in curved spacetime. That's where you need General Relativity.
Special Relativity is the special case of flat spacetime.
"More distance" measured how? It's the space itself that's curved. There is no undeformed "external space" (with a perfectly straight ruler) over which the curved lines are drawn.
That's my first thought too when I see someone falling from a building....."Oh look, someone inertly observing my acceleration through spacetime."
Yea, dunno why it took this "Einstein" guy so long to figure it out smh
@@fellipeparreiras4435
smh
@@jonathanlange1339
Smh
@@Daniel-ve8gv
Smhhh
Albert Einstein was happiest when he thought of a man falling off a roof.
Hold up one minute
as someone woke up at 7 am from some roofer with a nail gun putting on shingles i can relate
😂😂😂
UNDERATED COMMENT ahahaha i know how it sounds, right!?!
Though he was happiest when his work, the atomic bomb, detonate above Hiroshima.
@@guenoleadamantu8939 he actually dreaded the use of nuclear weapons
7:50 Ha! Joke's on you, because I'm watching this while falling from a
Rip dude
And thanks to the kind bystander that hit the send button.
@@akshaysodhi_1044 No "thanks" to them, they didn't finish the sentence for us!!? Lol
From a bowl?
Did you die?
If scientists have known for so long that gravity is not a force, why are they continually trying to "quantize" gravity?
Just imagine a German man giving all these Mind blowing ideas 100years ago.
And nowdays some people beleive the earth is flat
Now they prevent climate change by missing school days...
ngl, they do put out alot of useless hot air in school. maybe it's not so bad.
People don't have time n money to think anymore nowadays....
Everyone was so busy nowadays
And Nicola Tesla said all Einstein’s ideas were crap!
After watching this video I couldn't stop shaking my head due to the fact that I just realized Einstein was way ahead of his time like imagine if he was here today. Legend says that I am still shaking my head from amazement.
Bruh same here - like that guy was incredibly smart to be thinking that way so long ago
I am too thinking...like his iq must have been equal to the 'one way speed of light'
I think it was a different way of living back then. From documentaries and audiobooks I've consumed over the last decade, one thing that kept surprising me was how young so many scientists of past eras were, AND, that they often made great contributions in multiple fields. There was no TV after school, evenings & weekends. It was a harder time for many and perhaps these chaps were more aware/grateful for their privileged education. I guess what I'm saying is people had less distractions with more motivation & time to move through the subjects. I think they were far better educated than us at equivalent ages - at least those who managed to get an education.
@@chocolate_squiggle 💯💯💯
@@chocolate_squiggle More like the problems they were solving were much easier than the ones we're left to tackle today. Even with our superior education, we still need more of it to make progress because almost all the low-hanging fruit is gone.
Now, this isn't to say our education system is perfect; it's anything but, to the point that allowing students to skip lectures and do literally anything else with their time raises GPAs by over 15% (twice that for students of colour). But we also know that IQ is, near as we can tell, purely a measure of socioeconomic factors like nutrition and education rather than anything genetic (yes, IQ is highly heritable, but lots of non-genetic things are inherited), and it keeps going up; people at a given age do still keep getting measurably smarter every year and every generation as long as they are given access to the shoulders of giants. Despite all our many problems and issues, we're still getting smarter faster than the problems we're faced with are growing more difficult. We could definitely be doing much, much better, but it's reassuring to know we at least aren't doing bad.
“...and I will prove it to you by blasting off into space.”
*Reaches for giant bong*
It is 42.0 the veritasium element number after all
He need to go high
Filled with nitroglycerin.
12:31 My man took kick to the face in zero gravity..!! 😂
I’ve watched this video tons of times. In the way it’s explained, there’s always a second where I can truly grasp the reality of this… it’s so abstract for me, though, that it quickly fades. I think it would be nice to see an illustration of the geodesics in curved space time similar to how the earth animation was done.
This is so true brother
A person in a rocket ship whose path appears to "bend" to an external viewer when the rocket ship gets near a large object is actually still traveling in a straight line through space. It is space that is bending and therefore there is no "force" changing its trajectory.
@@BillGreenAZ Then one could ask:* why is it that space is bending?
@@fiokronsgames2082 Mass bends space. I don't know why that is though.
@@BillGreenAZ space bending wtf 😒
I'm an apple 🍎 ... I was just chilling the other day and suddenly my tree detached and started moving up and before I knew it a freakin scientist just came straight at me from the bottom and rammed me with his gigantic head.... Like what is wrong with that dude... Thanks to him now no one will eat me
Absolutely LOL brilliant...!
He is now eating our brains !
P.S. The apple actually didn't fall on Newton's head.
Every smart aleck is rehashing the old, but another Einstein is illusive.
actually, that scientist ate that apple afterwards
Newton only saw the apple. He did not see the birds
Sadly my level of understanding remained stationary while watching this video.
physics not your bag then?
Well stationary in general relatively means acceleration. So you will get there (pun intended)
Clever 🙃
witty
@@josephm.6453 only in curved space time!
Saying that gravity is an illusion and that it is simply a symptom of curvature of spacetime is a bit of an oversimplification. The truth is that we do not understand gravity. We can observe and predict the effects of gravity but we do not fully understand it which is why there is such a problem as soon as we go from macro to microcosmos of quantum physics and quantum gravity and why the idea of gravitons was proposed in the first place. Also, there is no such thing as being at rest outside of the effects of gravity. There is always some gravity well you would be in. Even if there was only one star in the entire universe and you were on the other side of the observable Universe, you would still be in the gravity well of that star, no matter how shallow it would be. The only reason we talk about escape velocity is that you manage to escape from a deeper gravity well into a more shallow one.
One complicated explanation at a time, buddy, let me soak this in first.
Good comment. Also gravity doesn't exist until there are 2 bodies to experience it...
Also, one of the main reasons for the creation of String Theory was to try to unite the two with 10 dimensions and an extra parametric or time dimension. Basically we have no clue why gravity does the things it does because it looks like an acceleration from an Einstein reference, but from a quantum physics perspective it does even weirder things.
@@KRYMauL why do i get the feeling we are missing something crucial when I think about this stuff, and the fact that we only ever experience the illusion our brain creates to represent reality makes me feel like it would be like light to a creature that hasn't evolved sight.
@@trybunt Because that is how it works, the universe is actually a series of fields that interact with each other in trigonometric ways.
Long time watcher, first time commentor. You really get me to think, and challenge long-held beliefs. Well done!
"Gravity doesn't exist!"
Flat earthers: I knew it!
I was just thinking this, with the right level of fundamentally misunderstanding this video I could see it feeding into the FE crazy ideas of the world just accelerating upwards at 9.8m/s squared.
Nonlocality and "general" relativity is about the level of flat earthers, denying all science and energy conservation laws. How will one prove that space is a magical gelly of extra time or instant energy transfer?
Gravity is an acceleration yes, because a force is the outcome (the field of) of particle charge due to spin states and vibratory conditions.
Relativity is the opposite of anything general.. It is by being relativity, "special"(localities measured)
@@deltablaze77 Isn't that what they believe, tho? Doesn't the pizza just fly through space propelled by dark energy or whatever flavor-of-the-month untestable excuse they can come up with?
@@benjiusofficial we also have dark enery on relativility but yeah their logic make way less sense
This video made more sense in a flat earth way than any flat earth video?¿?🤷🏽♂️
Veritasium: u r not an inertial observer
Me who is jumping off a roof: AHAHAHAHAHAHAHAHAHAAHHAAH U FOOL
That'll show em. Try not to land on your head! *checks comment time* Assuming you've been falling for 7 hours or more that is.
Rest in pieces my friend😂😂
ruclips.net/video/vCTy4S7x6js/видео.html
flat earthers are gaining on us
Scott Russell ahlie
The CGI on that rocket was better than any I’ve ever seen
Wow Derek literally went to space for a video. Now, *THAT'S* dedication.
That's not space, it's an airplane they nose dive into the ground which makes you look and feel weightlessness before pulling the plane back up and leveling it out.
He even crashed himself into a planet
@@DesertGorilla505 😭😭
@@dexternrooks1210 the joke
you
Actually, he did not fly into outer space. If you watch the sequence again carefully, you will see that he uses computer animation to provide the illusion of flying in a rocket ship into outer space.
"what should i have floating around in this carton rocket?" "how about that ethanol molecule, it looks kind of like a cute puppy"
Ever heard of Snatoms?
@@kamikater14 if you mean the molecular model kits, i use them with my classes
A few questions if I may:
1. If gravity is not a force but rather objects are following a straight line through spacetime, the why doesn’t the entire earth free fall to its center of mass and create a black hole?
(2) If gravity is not a force then why are scientists searching for gravitons? There would be no force carrying particle becase gravity is not a force
3. Do gravitational waves travel at the speed of light? If so, then gravitons would have to be massless like photons, correct?
4. Since standing on the earth is an accelerating reference frame, then ALL accelerating objects must be exchanging gravitons, e.g. your accelerating rocket with the ejecta it produces. I know this is wrong; where does my reasoning break down?
Here I am watching this video for the 4th time trying to better understand the concept, while Einstein thought of this in 1915 with only a fraction of the technology available today. It is mind boggling how smart he was
Apart his genius, I like to remember to people that THINGS do not evolve like in movies, we are the same intelligent humans since 10k years, the only things changing are the tools we have at our disposal, 4k yo Einstein is a real thing 😂
I watch this video again and again every couple months to understand it more. Also on my 4th watch, I think I just accepted how to the falling man, everyone else is accelerating up
@@fabriziogiordano2405actually wrong, contrary to popular belief, thanks to the mass utilization of ethyl as gas fuel sometime ago, our generation and at least 3 generations before are dumber than our ancestors.
liked your comment so you could watch it again, imma watch it for my 2nd time soon
That’s maybe why if your really clever they call you Einstein, he was really clever, your mind was boggled because you obviously didn’t realise he was really clever, and technology would not have helped him as it was mostly theoretical.
This guy makes so much efforts to make the videos that he went to space. We should support him👍
CG space :) . But he did get to go on the Vomit Comet (when he was weightess).
Bro, I agree
Haha, nice comment!
unfortuently, he also crashed into a planet to explain it to us. R.I.P Veritarium 😢. You will be remembered
He didn't go to space. He went on a plane that moves in a wave (up/down) motion. When the plane goes down as fast as gravity's acceleration, then the people inside the plane feels weightless and are in freefall.
“Do you feel weightless?”
Do you know what I’m on right now?
*P*
*B*
*S*
*S*
*P*
*A*
*C*
*E*
*T*
*I*
*M*
*E*
*G*
*A*
*N*
*G*
Gas station boner pills
Bad question to ask. I always watch Veritasium when I'm in a state that I "feel" weightless.
I’m floating in a salt water hot tub so I’m fairly neutral.
me and froggie we dont know that but froggie sends you a big wet kiss....
This genuinely makes so much sense
My science teacher is a big fan of you....
She just taught a unit about how gravity is a force.....
I mean even if it is wrong it’s a close enough approximation to get people to understand the concept and the math
gotta love to see her/his/its face when he/she/it discovers this video
That's how you teach and learn about gravity in school, that's fine but yes, it should also be taught that's not the whole story
@@suricanlp Science teachers (might/should) know this. However, by "historical analogy", students are usually taught ~18th century physics before ~20th century physics, because its just easier to learn these simple models (gravity as a force, etc) before getting deeper into things.
@@tapksa This. It's better to teach a classical description of the atom, maybe admitting that there is more to the story, before a quantum mechanical version.
Fun fact: the eclipse photographed in 1919 was taken in Sobral, a small city in the state of Ceará, Brazil.
Veritasium:"gravity is an illusion"
Me:*starts starts moving my limbs around as if I'm about to float on air*
I like how even the guy fell off the roof and crashing to the floor in high speed,he is still happy
Imagine how drunk he must be !
@@cristig243 or depressed?
@@kumarashish2051 or both
He's high
@@ploppyjr2373 hahaha yeah. Depressed and drunk. A "deadly" Combo
I know it might be a stupid question, but since we are moving around the space time, are we like in a video with a frame by frame? If we ever go back to the exact location of the past in space, will it be something there?
I am sure im not correct. But if we are moving around the space time it sounds like a recording a video on a video tape. The time space is just a space where we are moving around the space getting recorded?
well, none of the trajectories that we can go in our space-time can get back _exactly_ to the same location, so we'd need an external (to our universe) observer to tell us what is going on.
@@ichpokhudezh Can we leave entangled particles to the x,y,z point and look at it after some times? Since it ignores the time factor, can we look at how it is once we leave the particle A to a certain point. Using B to check the status?
@@Djdjrkejcjfjf a "point" is described by 4 coordinates in the space -time (x,y,z,t). Entangled particles don't ignore time per se - their lifelines will include the fourth coordinate and it changes.
Newton: apple fall from a tree
Einstein: man fall from a roof
Apple falls from a tree on a roof and falls on mans head and startles him off the roof
And I fell off the wagon and found myself relative to a bottle of whiskey.
@@timno9804 Newton be liek: ow, I fractured my ribs and broke my neck, but this apple...
That's what differentiates their theories to its core. What an excellent analogy!
Hawking: a man falling into a black hole
'acceleration is a deviation from a geodesic' this really help me grasp things a bit more. I probably need to spend some time thinking about it but I feel its key to grasping GR at least at a basic level.
Yes! It was the final missing puzzle piece for me after scratching my head for a very long time about how the earth could possibly be accelerating outward without expanding.
Veritasium: *"gravity is just an illusion"*
Flat Earthers: Our Time Has Come.
It is a scientific fact that the Earth is flat in some Inertial Reference Frames.
@@josephburchanowski4636 From the point of view of someone who's traveling at the speed of light
Veritasium: *"Space is curved"*
Flat-Earthers: *disgusted face*
Exactly what I thought. They will cherry pick that quote forever
We can only go
On what we are told, if you want proof either way you need to go into space yourself
I’m confused, shouldn’t orbits be circles? I know that Kepler explained they’re actually ellipses but if we had a sphere that would bend space time shouldn’t the space time line be a circle around it? Wouldn’t we need a force to deviate an object into an elliptical orbit?
The fact that he predicted most of my own questions with his white-shirt self made me feel surprisingly smart for noticing the "inconsistencies" before they were shown to me, thanks for the video man :D
This stuff is very hard to present well. However, you presented it in a way that me, a high school student, could understand it. You, sir, are a living legend.
ahhh trust me as a undergraduate studying physics general relativity ia quite fuckin hardXD
"gravity is kind of an illusion"
*FLAT EARTHERS HAVE JOINED THE CHAT*
"Because earth is curved"
*FLAT EARTHERS LEFT THE CHAT*
Kartik so yes but actually no
For flat earthers, earth is a discoid spaceship constantly accelerating through the Universe.
nolinagirlaSia.link
The Earth is Flat.
The explanation of an INERTIAL OBSERVER really nails the concept better than anything else I’ve seen or read. This video really is a masterpiece at conveying gravity.
For anyone who's curious, The first question you should be asking is "What is Space/Time"? Space is the observable dimensions (a cube has 6 sides), Time is change happening to those dimensions (The 6 sided cube moves from here to here). What is a force/gravity? 9.8m/s/s. So you have M, which is dimension, and time, s/s, and since it's s/s that makes this force a curve on a graph. Therefore a force is space/time curved and this entire video is explaining absolutely nothing. This took me 3 seconds to figure out and it makes me cringe that this explanation even exists or that I ever had to think about this. Definitely not finishing the video'
@@rhyvehr the very idea of "spacetime" is ludicrous. Non-euclidean geometry is nothing but a mathematicians wet-dream and is neither substantiated by logic nor empirical reality. there are only 3 dimensions and time is INDEPENDENT of those 3 (length, width, height) which are DEPENDENT....Einstein was a mad man who didn't understand basic logic and his insane relativistic THEORIES are the result. A x B = B x A is a logically invalid statement LWH are NOT independent like time is....all of this is unfortunately the basis on non-euclidean geometry and so called relativistic physics (anti-physics really) which is the height of absurdity...DESCRIPTIONS without any proof is NOT an explantation. Descriptions are NOT explanations. They are mere superstitions. "Curved" spacetime. hahahaha...and the statement Veritasium makes about "all claims of relativity have been proven/never debunked" is complete BS....there has NEVER been a proof for relativity and all experiments have not only failed to prove relativity but.have actually disproved it. Its so funny to me how 99.9% of the population will read a studies abstract and conclusion but never question the most important section (the METHODS section)...read the METHODS and you'll find that there is not even a shred of logical or empirical evidence for any of the claims made in the so called "scientfic" papers that get published these days. A wise man once said: "If you can't dazzle them with brilliance, baffle them with bull####"
@@rhyvehr Consider what is the man (AND THE EYE ON BALANCE) who IS standing on what is THE EARTH/ground. Consider TIME AND time dilation ON BALANCE. What is E=MC2 is taken directly from F=ma, AS the stars AND PLANETS are POINTS in the night sky ON BALANCE. This CLEARLY explains and proves the fourth dimension. c squared CLEARLY represents a dimension of SPACE ON BALANCE !!!! Indeed, E=mc2 is taken directly from F=ma; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches it's revolution. Notice the TRANSLUCENT blue sky ON BALANCE. Consider what is THE EYE ON BALANCE, AS c squared CLEARLY represents a dimension of SPACE ON BALANCE. Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS what is E=MC2 is taken directly from F=ma; AS GRAVITATIONAL force/ENERGY is proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE. “Mass”/ENERGY involves BALANCED inertia/INERTIAL RESISTANCE consistent with/as what is BALANCED electromagnetic/gravitational force/ENERGY, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). Accordingly, ON BALANCE, what are OBJECTS may fall at the SAME RATE.
By Frank Martin DiMeglio
@davidmudry5622so if something has a lot of mass it will be hard to accelerate right? So then if you think about how gravity accelerates things, then it should be harder for it to accelerate a more massive object. However, the more massive object is pulled stronger by gravity. The pull by gravity and the resistance due to inertia cancels out with any sized object. I haven’t studied physics to know why, but the relationship is proportional.
@@rhyvehrTldr; Einstein's an idiot
7:55 "Do you feel weightless? No, so you are not an inertial observer."
Me watching the video while free falling: Emm, I don't think so.
I've watched this a few times and my brain is fried, my world is almost upside down, and I don't know how to explain it to others
Me too. Standing up literally feels different for me after watching this video. Like I'm being constantly being accelerated through spacetime by invisible rockets below the ground, constantly escaping each geodesic that wants to bring me to the center of the Earth. Those two m's he mentioned have switched in my perception of gravity. I no longer feel like the more mass I have, the stronger Earth's attraction on me will be. Rather, I feel that the more mass I have the more inertia I will have, thus making the work of those invisible rockets harder, which in turn feels like more force applied to my feet. Truly mind boggling!!!
Could just reject the theory presented here. Still talking about gravitational forces, just calling it by a different name.
@@michaelhoogendoorn3179 it challenges the conventional belief of gravity as a virtue of mass, so interaction with electromagnetic radiation isn't something thought to be possible in Newtonian physics. Or maybe I'm wrong and im talking ahead of myself but that's what I got from this video.
i german the title is even crazier: "Schwerkraft ist keine Kraft"
(the german word for gravity contains the word for force)
Same in Dutch
I have mathematically unified physics.
So that means the band Kraftwerk means something like "workforce" lol, I always thought kraft meant crafts, as in arts 'n crafts, and figured the band was pretentiously called "work of art"
@@Vacuon Kraftwerk means Powerplant
Just like Coriolis force which is not a force
I like the thought of you sitting on a couch, staring into the void for minutes at a time for the clone bit
Wow I actually like this explanation better! I NEVER agreed with the normal explanation of space time with a stretched fabric! Because I always thought "if this is gravity, why aren't we tucked into the sun?" Thank you for this different view.