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Why Gravity is NOT a Force 

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The General Theory of Relativity tells us gravity is not a force, gravitational fields don't exist. Objects tend to move on straight paths through curved spacetime. Thanks to Caséta by Lutron for sponsoring this video. Find out more at: www.lutron.com/veritasium
Huge thanks to Prof. Geraint Lewis for hours of consulting on this video so I could get these ideas straight in my own brain. Check out his SElosk channel: ve42.co/gfl or his books: ve42.co/GFLbooks
Amazing VFX, compositing, and editing by Jonny Hyman
2D animations by Ivàn Tello
Filmed by Steven Warren and Raquel Nuno
Special thanks to Petr Lebedev for reviews and script consultation
Music by Jonny Hyman and from Epidemic Sound epidemicsound.com
Rocket made by Goodnight and Co.
Screen images in rocket by Geoff Barrett
Slow motion rocket exhaust footage from Joe Barnard at BPS.Space
selosk.info/name/ILl8ozWuxnFYXIe2svjHhg

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9 okt 2020

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Veritasium
Veritasium 4 dagar sedan
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.
Non Sicuro
Non Sicuro 12 timmar sedan
I had to stare at it for a solid 2 hours before i got it
Adonai Blackwood
Adonai Blackwood 12 timmar sedan
@K.L. 🤯 amazing question! I think its because of the air/enclosed atmosphere on earth...and a free-falling person would interact with that "material" and it would feel that opposite friction from the air like a force against their skin & hair, etc... I've had to watch this video several times & surf thru some comments to get a lil bit of perspective. It’s a dizzying topic, but very interesting nonetheless!
Edward Newgate
Edward Newgate 12 timmar sedan
Then why on the opposite side of the Earth don't feel they are left behind and floating in space?
Jim Larsen
Jim Larsen 12 timmar sedan
Tell us. I know you think you understand what you thought I said, but what I said was not what I meant. 😞
Science Revolution
Science Revolution 12 timmar sedan
Gravity is not a force. That is the biggest and stupidest lie in physics made by sick-minded theoretical physicists. They use Newton's gravitation law to calculate and predict astronomical phenomena. They knew gravity is the most accurate measured fundamental force in the labs. They said the tide is caused by the gravity of the moon and the sun. But they just keep lying to protect the rest of the lies in their theories. Gravity is not a force but it keeps planets in orbit, matters fall to the ground, two lead balls attract each other with a force F=G x m1m2/R^2? What else did they lie? Blackhole is fake, gravity wave is fake, solar wind is fake, fusion is fake, the moon landing is fake, the tide is not caused by the moon's gravity, and much more. So what is gravity? The curvature of spacetime? Another immaterial word puzzle? Gravity is an induced attraction force between neutrally charged matters. Two hydrogen atoms 1 and 2 at a sun-earth distance, proton 1 attracts electron 2 and repels proton 2, proton 2 attracts electron 1 and repels proton 1, electron 1 attracts proton 2 and repels electron 2, electron 2 attracts proton 1 and repels electron 2. The net Coulomb's force is always an attractive force which is proportional to the product of total charges within the two atoms. Total charges equal to mass. Without charges, there is no mass. This is the mechanism of universal gravitational force. Two magnets at a distance always attract each other with a magnetic force, even the same poles repel each other. Same principle. All matters are made from atoms, all atoms are formed from charges atom building blocks. Charged atom building blocks only carry electric force/electrostatic force, therefore all forces matters carried are the electric force in different configurations. In reality, there are no force lines and force fields. All made up word puzzles. The magnetic force is a misinterpretation of the circular electric force. The field is a misinterpretation of force. Fields and forces must coexist with the matters/carriers. There is no magnetic field around a current-carrying wire or coil. There are iron powders around a current-carrying wire or coil. The current in the wire induces nearby iron powders to become small magnets and connected together and form into a circle around the current is the precise mechanism. The so-called magnetic force is in fact circular electrostatic force carried by a circular current or concentric dipole rings in the magnet.
Howard
Howard 3 minuter sedan
Have a look at you tube vids for 'The Hutchinson effect' Looks like electromagnetic forces can eliminate the effects of Gravity (If Gravity exists) and other strange effects that were apparent at ground zero in 9/11 NY NY.
Nicht Du
Nicht Du 7 minuter sedan
We knew this since Einstein.
Ben Schlea
Ben Schlea 8 minuter sedan
Thank you for clarifying that you weren't in an actual rocket.
cortedemico
cortedemico 10 minuter sedan
i take umbrage with the statement at 2:06. there would be many. including how we know this. EDIT: 4:16 things have not improved. you're telling me they are using and acelerometer? this all sounds wrong... go back to aerofoam.
Edwin
Edwin 13 minuter sedan
Thanks for changing the title it makes it a lot clearer
Zeneth Boiron
Zeneth Boiron 13 minuter sedan
nice video but I would like to say no to the smart switches coz I don't want to lose my peace of mind knowing that someone may hack my lights.
Doc Lee
Doc Lee 17 minuter sedan
The falling man is really the man that has left his inertial frame of reference and the rest of everything else is accelerating...until they meet once again. It’s so beautifully simple.
Dick Johnson
Dick Johnson 24 minuter sedan
IVE BEEN SAYING THIS FOR SO LONG. GRAVITY IS NOT A FORCE. IT IS A DISTORTION OF SPACE. on top of that BECAUSE space and time are woven together not only is space affected by large mass, so is time. this is called time dilation. is it the reason why astronaut feel like they have been gone for a week in space while on earth time is a month
Václav Pavlík
Václav Pavlík 29 minuter sedan
Nice video! I just wish that people had to pass a course (or at least a quiz) on GR before being allowed to write a comment which is not a question. Imagine how many unintelligent stuff would have disappeared from the internet...
ツInfernoRNG
ツInfernoRNG 39 minuter sedan
my life was a lie
Timothy Kieper
Timothy Kieper 41 minut sedan
But, How many angels can dance on the head of a pin ?
Steve Openshaw
Steve Openshaw 50 minuter sedan
Loved this video. Great job. I also wanted to share Arvin Ash’s video on the subject. selosk.info/class/video/iWiI1pmlm4V_uXE.html I think these two videos complement each other really nicely.
Patrick Marsh
Patrick Marsh 55 minuter sedan
If gravity is not a force then what are gravity waves and gravitons . These are things that have been experimentally shown to exisst.
AnomynousX
AnomynousX 57 minuter sedan
How come objects circle into massive objects and not just circle it ?
Jonathan Vince
Jonathan Vince 58 minuter sedan
Ok the use of space time now that works by time as in a clock so in theory in space you can travel at any speed including light or faster. What would you see out of the windows? well things would go fast past the ship? But no you will still see the objects go pass at a normal speed you would see walking driving flying on a planet. Reason you will see things for longer in space. a large light object will be seam for longer like a brightest star you can see in the sky is light years away but you can still see it. But what you are seeing is in that stars past. Now when you see a man falling what can he feel well for one speed you can see landscape changing looking down up or to the side. Then there is air pressure like squeezing a balloon the closer to the ground the less pressure because it moves away as in your weight. So you would think the air pressure would save you but NO. Just like a balloon you press harder the quicker the air moves out. So why am I saying this well space has no pressure the feeling of witlessness is completely different. Now if in water you can move like in space sort of but there are many things different even then. As force of water to your arms treading water or swimming. So in affect the idea of feeling weightless when falling is not quite right. Now there is only o9ne other way to feel weightless and that is? Well a steep dive in an aircraft. All others including a wind machine used to train sky divers uses pressure of air. Try a trampoline you will get the same effect but you will still notice changes. This is why Gravity works and is a type of force and it can be measured. They even can measure gravity affects in space but why does it exist? Well it is there as pressure to make land mass or frozen ice or life like humans would not exist and we would just be flouting along water would be floating too. so to say it time bends and not a real force is a bit wrong. So if in space you can float around but does you mass make objects smaller come towards you? I think an object could be affected by you floating in space a small one though I hope for an experiment on this happens.
The ill will
The ill will Timme sedan
Is there such a thing as true inertia?
Greg Johnson
Greg Johnson Timme sedan
Actually Gravity is a myth.... the earth sucks... (old joke... sorry couldn't resist...)
Daniel Esteban Valencia
I have a question I speak spanish and English What channel follow?
Jake Jada
Jake Jada Timme sedan
So if I move from one point on a sphere to another along the external surface of the sphere, I am not moving in a straight line. I'm moving in a curved line. To move in a straight line I would have to go through the sphere.
Gaseous Clay
Gaseous Clay Timme sedan
You just unlocked something in my brain!
Corey Theiss
Corey Theiss Timme sedan
I watch quite a few science channels, and many others are talking about the search at LHC for the graviton. How does that jive with this interpretation of gravity?
Fernando Suaki
Fernando Suaki Timme sedan
Mindblowing
Numh Muhal
Numh Muhal Timme sedan
If its going up ☝it must go 👇
phoenix21studios
phoenix21studios Timme sedan
now to write some angry letters to my high school........
SneakyJoe's Salad RUS
Nice job of blurring all but 1 zero g logos
Joe Dush of 64 Street
Scientists at CERN have discovered that Space is a vacuum because CNN sucks.
Gaseous Clay
Gaseous Clay Timme sedan
and Epstein didn't kill himself
TrueFace
TrueFace Timme sedan
This is a fantastic video! for truth! for glory! for science!
Sun f4g
Sun f4g Timme sedan
bruh what
Alonso Moreno Romanini
I gave a like at 1:00 and at 6:22 I wrote this congratulation comment..
msigurko
msigurko Timme sedan
So this means that Earth is not an inertial frame of reference since it is accelerating head on to the free falling guy that is an inertial frame of reference. Now I'm confused. Having two free falling guys, on opposite sides of the Earth, we say that the Earth is accelerating head on towards both of them. How do we reconcile that? Is this possible due to the equation that you showed us that allows for acceleration to take place without ever having a change in spacial coordinates?
Restoring Reality
Restoring Reality Timme sedan
Gravity is not a force because it's a nonsensical bull$hi+ term given to us by the Jesuits and gobbled up by the masses.
Bektas Konca
Bektas Konca Timme sedan
gravity is a force, the bigger the mass bigger the force, to say anything else is just plain stupid, gravity has motion and wave which in effect affects matter around it so it is a FORCE......
stratos konstantoudakis
Gravity is not force but we can create artificial gravity through force what we need is to apply force to material X which our turbine comes into place basically with A power on our engine we can pull the material close to the turbine therefore if material X is a human he can generate energy and move his mass away from the force of the engine of course we need multiple engines or one massive we also need a specific "floor" for the air to go through and cycle to apply force to our body no air=no mass, nomass= no AIG It would be too noisy for sure but it would make many things simpler for people living in space stations in the future
El Cavador
El Cavador Timme sedan
Hello! Great video, you condensed so much information in such a short time and still make it easy to understand for anyone who is watching it. It gave me a new and shiny perspective on the world and how things are actually moving. I understand that in curved space time you need to accelerate to remain stationary but I don’t understand where does that acceleration come from. Why don’t we match speed with the one of the Earth? Also, acceleration means higher and higher velocity, right? What powers this acceleration, where does this energy come from? Thank you!
karim hassane
karim hassane Timme sedan
Interesting video but something is wrong about geodesics part, it seems a straight ligne from eyes but it isn't. The real straight line is a like a tangent to me.
Justin Rohe
Justin Rohe Timme sedan
selosk.info/class/video/e2lkj3uX2592y6M.html video demonstration of the classic thought experiment dropping a feather and bowling ball in a vacuum.
spuwho
spuwho Timme sedan
Wait...Mars is a mass, it is accelerating just like the Earth, therefore it should be carrying a charge...but it has no magnetic field. But it does exhibit gravity. Whats up?
Nicholas Deitrich
Nicholas Deitrich 2 timmar sedan
Inertial reference frames are better described with kinematics rather than dynamics or kinetics
YouBetterBeYou
YouBetterBeYou 2 timmar sedan
Now please make video "Why gravity IS a force and space-time does not exist" and do justice to poor Einstein. It is documented that Einstein did NOT support the geometric interpretation of GR you are proposing here. In fact, his "leap" was MUCH more radical. And here is why: For Einstein there were only measurable physical interactions compounded in actual physical events. Nothing more. Nothing less. Correct description of these events have to have priority over abstract concepts or intuitions. But there was a problem. A HUGE problem. A problem everyone saw, but no one really understood before Einstein. The constancy of speed of light as predicted by electro-dynamics. So what did Einstein understand that nobody before him did? Einstein understood that the descriptions at the time were not purely descriptions of physical properties--but there was something in there that seemed intuitive to the everyday lad, but was utterly flawed. In there were the ideas of "space" and "time". In the formulas, they were just parameters for evolution, for describing the dynamics--but what are they physically? People knew that this was an open question, but they did not question their strong humand-minded intuition. They still granted space and time the benefit of the doubt. They still hoped to find some absolute property justifying this use of "time" and "space" for describing the dynamics of physcial objects. Not so with Einstein. Einstein cast aside his human intuition and dove into a physical world where only events and physical interactions rule. And, in a first step, he reduced time and space to what it really is: a way to talk about comparisons of events. And the only valid physical measuring device to make such comparisons--light! The only thing that has a speed EVERY observer agrees on--light! So if you want to give meaning to two things happening "at the same" time--you have to use light. If two light signals hit you from two events simultaneously ("at the same time, we say"), those two events emitted those signals simultaneously for you! Every observer agrees on the light signals hiting you simultaneously--because that is the real, measurable physical world. Every observer agrees on how the light was emitted and that it traveled from its source to you AFTER it was emitted--because that is the real, measurable physical world. But they only hit you simultaneously. The same light signal will hit another intertial observer at different times. One signal will hit him first ("sooner, we say"), the other one after that ("later, we say"). These are are the physical realities. The "when" of each event happening is merely a local convention, it has no physical meaning to itself. It is just a conventional parameter to describe the order of physical events. Space and time are not "relative". Space and time are not at all! They are just short-hand conventions for "this event happened after that event". This was Einstein's first leap. A leap of abstraction beyond the most fundamental intuitions about how the world is ordered. His second leap was conceptually a LOT easier, but mathematically a lot harder. Conceptually, the next step is also a little odd: You are right in the video but for an important detail--he noticed that a CONSTANT gravitational field cannot be detected by a free falling observer. This means that LOCALLY (at every event) a constant gravitationial field is as good as no gravitational field. Hence, LOCALLY, there is no difference between an intertial observer and an observer uniformly accelerated by gravity. But this means, if you are small enough, no matter how fiercly gravity pulls at you, no matter how greatly the gravitational force changes along your path--you will observe the same physics. So, as before, you need a convention to describe the order of the world around you and you use light to do it. But to make this valid for all observers and being able to translate between observers you now have to consider the light AND the gravity that pulls at you. And the way you make this work is encoded in the formulas of general relativity. And what do the formulas tell you? That there is mass and energy and real, physical interaction, REAL forces, but you can still describe it using conventions of "space" and "time" IF you change conventions along with the gravitational forces. When the gravitational forces change, you have to change your convention (your "metric field") for "space" and "time" accordingly and this is how you interpret the gravitational field itself as a curved "space-time", yet, it remains a real physical field with real physical forces.
twayne wade
twayne wade 2 timmar sedan
woah woah woah first they say the earth has curvature now they're saying the fabric of space time does too? what's next, the sun?
Judas_1989
Judas_1989 2 timmar sedan
I am effin speechless... perfectly explained, i understand everything thanks to all the practical tests... unbeliveable, I never thought about gravity working like that even tho literally every single object we see totally explains how the gravity works :D Great job, guys.
Gary Z
Gary Z 2 timmar sedan
Not a force, equals no gravitons, right? Can General Relativity describe reality on the quantum level? What are the implications for General Relativity for String Theory?
Maltedextrin
Maltedextrin 2 timmar sedan
love the way, you say "schadenfreude" so warm to hear that easteregg^^
wildfood
wildfood 2 timmar sedan
Does this mean the graviton will never be found?
MrPainfulTruth
MrPainfulTruth 2 timmar sedan
So what is the name of the power that mass exerts on spacetime, if its not gravitation?
why?
why? 2 timmar sedan
my understanding of "straight line" has curved now. what the hell.
Paranormal Activity and Mysterious Stories
Thank you. That was very interesting and enlightening. check me out. i have a channel about ufo and other conspiracies the government tries to hide.
Chris Purcell
Chris Purcell 2 timmar sedan
A thing that is infite and eternal has no qualities...because it has all qualities. This nothingness or fullness we name the Pleroma. Therein thinking and being cease...selosk.info/class/video/hKdpt6p00KN1lnE.html
Kavin Bala
Kavin Bala 2 timmar sedan
what a legend he just went to space in a rocket while standing upright he doesn't skip leg day also went to space without sealing is the spacesuit or bringing an oxygen tank I can surely say he should try to claim the world record for the longest time to hold your breath underwater edit: then in the next shot he's sitting on the roof of some person's house how does he also know how to teleport edit2: oh the dude on the roof was rocket man's twin
Alex
Alex 2 timmar sedan
I remember fighting with my physics teacher that electrical fields didn´t exist, that they´re just a model we´re doing to reflect the forces we´re observing...
Alex
Alex 2 timmar sedan
I´m generalizing btw, I don´t think electromagnetic fields *actually* exist
LightOurFire
LightOurFire 2 timmar sedan
meme video aimed to people who don't know science to make them think they now know
Gaseous Clay
Gaseous Clay 2 timmar sedan
Matter tells spacetime how to curve. Spacetime tells matter how to move....That's because of space displacement, The denser an object, the more spacetime is forced out from the center mass of that object. A spacetime shell is formed around the object from spacetime being squeezed out from center mass and the force of space trying to rush back in to fill the center. There I solved it.
Gaseous Clay
Gaseous Clay 2 timmar sedan
Matter tells spacetime how to curve. Spacetime tells matter how to move....That's because of space displacement, The denser an object, the more spacetime is forced out from the center mass of that object. A spacetime shell is formed around the object from spacetime being squeezed out from center mass and the force of space trying to rush back in to fill the center. There I solved it.
jan van ruth
jan van ruth 2 timmar sedan
the instant the space ship will start veering of course towards the planet the meter will detect acceleration. the change in direction in fact is an acceleration as speed has a direction the initial direction, and therefore the speed has changed and is replaced by another speed in another direction.
Camilo Toro
Camilo Toro 2 timmar sedan
Why does this look so close to EdwardCurrent’s video on the same topic?
Matt Sich
Matt Sich 2 timmar sedan
something just clicked for me and this makes much more sense now
typograf62
typograf62 2 timmar sedan
I have always felt the weight of time.
Kane Rubenstein
Kane Rubenstein 2 timmar sedan
if you hold a coin in your hand 4 foot above the ground, and then let it go. the gravitational forces pull it to the ground. Light is the governor of the Universe. This video is nonsense. Gravity is Light slowing down!
Redshift
Redshift 2 timmar sedan
thats one claustrophobic rocket though.
Carol Binkley
Carol Binkley 2 timmar sedan
So what is it?
weston028
weston028 2 timmar sedan
Okay so question?? Our Galaxy is traveling 375 miles per second according too stardate.org so if we managed to break out of our already fast moving galaxy, and our fastest rocket Juno is 165,000 mph are we going faster than our Galaxy and would we slow down after we enter the Density of Space???
weston028
weston028 2 timmar sedan
Also wouldn't we be going 165,000 mph + 375,000 mph or is it more like wake boarding behind a boat catching a tide, get away from the boat and slow down??
Airboy Jair1
Airboy Jair1 2 timmar sedan
I was just watching this for fun but let’s just say I just learned something that would take 2 whole weeks to learn in school
Rosepetal Drone
Rosepetal Drone 2 timmar sedan
Great information, right up to the point of pushing stupid sh*t. Really...Light switches for my phone. How did I live before. WTF.
BravoFoxtrot LLC
BravoFoxtrot LLC 2 timmar sedan
Gravity is the absence of force, just like darkness is the absence of light, to have one the other must also exist.
iN STAR GRAM FiRMAMENT
iN STAR GRAM FiRMAMENT 2 timmar sedan
PURE PROPAGANDA hahahahaha talking to globeheads like to kids is a technique of manipulation ... busted
Pop RA
Pop RA 2 timmar sedan
U just demonstrated that the earth is actually flat and gravity doesn't exist cause this flat pizza is accelerating with 1g upwards...:))))))))))
Nicolas De Roover
Nicolas De Roover 2 timmar sedan
if you are completely stationairy (as in not changing coordinates/not moving) and your space time isn't curved, would you still technically be accelerating? can someone explain
Usham Ronjan
Usham Ronjan 2 timmar sedan
What's causing the earth to accelerate, because we constantly feel our weight? Acceleration requires a change of momentum or an external force.
Dino Satto
Dino Satto 2 timmar sedan
wow thanks
Brian R.
Brian R. 2 timmar sedan
Derek's examples contain small assumptions that he attempts to use as validation for his thesis. Gravitational force is a function of mass and distance. When he uses the explanation of "feeling" or not feeling an attractive force, he is ignoring the fact that human being evolved on the Earth and are biologically accustomed to the force of the Earth's gravity. Gravity is a property of matter that is directly proportional to the mass of the object. It is the gravity of the matter in our solar system that shaped its development and is responsible for its current form. On Earth, the planet provides the dominant gravitational force for all objects within its influence. Derek's assumption of curved space-time is nothing more than an expression of the influence that an object exerts upon the gravitational properties of other masses. The "curve" he speaks of is a perceptual expression of the parabolically increasing force that occurs as an object moves into the range of influence of another mass. The mass of the universe creates an orbital motion of all objects based on the distances between each mass collection. It is the reason that our galaxy has a spiral shape with a massive black hole at the center. That black hole attracts all objects in the galaxy to it, but in a spiral trajectory. It will also attract other galactic masses in the universe based on the distances between them.
Boside
Boside 3 timmar sedan
This is a copy of vsauces video about down...
JonesTheShooter
JonesTheShooter 3 timmar sedan
damn im super confused now
Gaseous Clay
Gaseous Clay 2 timmar sedan
That's why I stick to watching the Quite Frankly Show live at 7pm ET weekdays on youtube
Brad Pasternak
Brad Pasternak 3 timmar sedan
I discovered most of this on my own doing my buisness on my toilet a month back but i also discovered that we are on this planet due to centrifugel "force" due to the rotation of us around the sun and the earth rotating around the axis thats one of the things that got me started on this subject. And that part with the falling man off the roof what that means is that the man is its own celestial body in space and time and is still in motion but the apperance of falling is how fast and long the eart will take to collide with the man on impact and BAM slam. So yes technically there is no gravitational force.
1k Subscribers Without A Video Challenge
This is the best explanation of Gravity ever!
Jens Petter Abrahamsen
Jens Petter Abrahamsen 3 timmar sedan
Great video. But if gravity doesn’t exists then what about gravitons from the standard model?
Falk Syberg
Falk Syberg 3 timmar sedan
This was challenging. But in the end I was soothed by the fact that those screw-on wire connectors are not the pinnacle of electrical engineering.
gunhan dastan
gunhan dastan 3 timmar sedan
if you KNOW "WHAT GRAVITY IS" you may discover WHAT YOU NEED TO FLY FREE IN AIR". you dont know what gravity is..
The Duck
The Duck 3 timmar sedan
i am blown away! u covered every question that popped into my head, and also by the fact that all of this actually does make sense to me now
dnai777
dnai777 3 timmar sedan
This doesn't make sense because if the man on the roof "fell" off the edge and in the duration of his fall he "feels" weightless demonstrating gravity is an illusion, then what "force" keeps any of us from falling up into the air?
Shankar Lakshmanan
Shankar Lakshmanan 3 timmar sedan
This video is a massive revelation and time well-spent.
Taboo Saboo
Taboo Saboo 3 timmar sedan
I have a POLAR Observation... Light and gravity are the only forced/nonforces without polar opposite. I propose they are Each other's Polar Opposite. One an inward force, the other an outward force. SCIVEGAN MATERIALSCIENTIST Thx . Ps VERITASIUM, A UNIVERSAL CATALYST of SCIENTIFIC IMAGINATION & THOUGHT
Jcknight7996
Jcknight7996 3 timmar sedan
But wait we observed gravitational fields..
CJ J
CJ J 3 timmar sedan
"I beg to Differ" -Bob Lazar
Usham Ronjan
Usham Ronjan 3 timmar sedan
I will lose my sleeps thinking about how earth surface is pushing us up, given the fact that earth is round, and it's not inflating. Someone help me here.
Abhisek Swain
Abhisek Swain 3 timmar sedan
A brilliant explanation Derek. Kudos to your hardwork!
Brian R.
Brian R. 3 timmar sedan
Gravity is a property of matter and is directly related to the mass. If an object has mass, the object has gravity. The gravity of an object can be measured by the attractive force between it and other objects. Therefore, gravity can be expressed as a force. You're welcome.
R F
R F 3 timmar sedan
This video is awesome, but somehow I feel dumber after watching... 🤔
Keith Goodwin
Keith Goodwin 3 timmar sedan
Lol, yep just a fairy tale told by your masters, reified by mathemagics...let me guess i dont understand. Hahaha
Dimitris Floros
Dimitris Floros 3 timmar sedan
Lol...its like bragging for solving a puzzle but instead of solving it, you make (or explain) a theory on how it would be solved...Like Schrodinger's cat, "its alive and dead at the same time until you observe it"! Wow, this guy is amazing! Shut up...its either dead or alive and you find out when you observe it... Oh, and you know what? Time is not curved. You can curve steel or even light but time...no..You can manipulate photons and bend light but you cannot manipulate "timeons" to beld time because they don't exist..
Daniel Meeks
Daniel Meeks 3 timmar sedan
Sooo everything is a kind of “black hole”
Victor Locoman
Victor Locoman 3 timmar sedan
Eventually, it will click into place for me.
Braden Woods
Braden Woods 3 timmar sedan
Man I always have to watch your videos twice to even understand half of what you're playing down 😋👍👍 great work!
Jeroen W
Jeroen W 3 timmar sedan
I think you feel weightless because of your vestibular system (system that makes you feel balanced) will be giving signals in the opposite direction of which you are falling.Just to make you feel good. Falling would feel very different if this system wouldn't do anything, you'd feel very heavy. I noticed something like this with my new VR headset, I just sat in my chair, playing a game in which I was jumping about 2m down. My whole body braced itself and it made me feel very light and nauseous. Even though I was just sitting in my chair and didn't move.
Max Laval
Max Laval 3 timmar sedan
Einstein was a pretty smart guy I guess...
Accumulator •
Accumulator • 3 timmar sedan
Are you saying that even though it looks like the moon is going in a circle around the earth it’s actually going in a straight line through space but space is curved and that’s why it looks like it going in a circle but is not actually doing so?
David Endres
David Endres 2 timmar sedan
Pretend you're pedaling a bicycle at a constant speed and not turning your wheel at all. There is a bowl-shaped ditch ahead of you, and you are about to fall into its outside edge. - If your speed is high enough, you'll escape it with no problem (although it might put you off your course a little bit.) - If your speed is too low, you'll spiral toward the center of the ditch until you crash or stop in the center. - If your speed is just right, you'll end up circling the ditch over and over again until you stop pedaling. In this case, you are orbiting the center of the bowl - going slow enough that you can't escape, but fast enough that you aren't falling further into the ditch. The moon is the bicycle, and the bowl-shaped ditch is the "gravity well" caused by Earth bending space-time. The moon wants to move in a straight line, but it is moving in a circle (technically, an ellipse) because it partially fell into the space-time ditch caused by Earth. See 6:09 in the video; although this model has its limitations, it's helpful for grasping concepts like this.
Nini
Nini 3 timmar sedan
this is one of the coolest videos ever. thank you for explaining this difficult/complicated problem!!
Sven Goris
Sven Goris 3 timmar sedan
You're right, gravity is not a force, it is non-existent. Maybe start learning about buoyancy and density. Phenomena which have been demonstrated and proven in reality by means of the scientific method instead of a theory based on philosophical grounds and consensus.
King Kush
King Kush 3 timmar sedan
lay off the kush
OrderlyHippo
OrderlyHippo 3 timmar sedan
Wait..so if we’re being pushed through space time by the earth’s mass, shouldn’t time move slower is space? Black holes are literally holes in space time? They move stuff to another dimension of space time? Are we just beings moving through space (x axis) and time (y axis)? Wouldn’t that mean when we move away from other objects, the speed/slope of time moves too? So the ultimate question he poses is, are we moving against time or against gravity? Wouldn’t it just be both, because the speed of time (y axis) depends on the space (x axis) a relative object has, its gravitational field/force?
David Endres
David Endres 2 timmar sedan
"Shouldn't time move slower in space?" Yes. Whether time moves slower or faster is a matter of your frame of reference, but you should look up "time dilation." In fact, even on Earth, two identical clocks will lose/gain time relative to each other if one is on a mountain and the other is at sea level. "Black holes are literally holes in space time?" No, not really. Black holes are objects, just like planets. The problem is, the warping of spacetime around the object is so extreme that we can't really fully explain it right now. When described mathematically, we get numbers that approach infinity, and infinity doesn't work in physics.
The Curiouz Traveller
The Curiouz Traveller 3 timmar sedan
That's why In order to put a rocket out of Earth's atmosphere, we have boost it at 9.8+ m/s !
Beena Plumber
Beena Plumber 30 minuter sedan
Nah. That's just how fast it will fall to the ground after one second of freefall. Escape velocity is something just over 11,000 m/s. But that's only if you want to stay in an inertial frame. You could have a tug pull you out as slowly as you like, but you'd never be weightless.
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