Why Gravity is NOT a Force

  • Julkaistu 18 päivää sitten

    Veritasium

    kesto: 17:33

    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 FIwill 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
    fiwill.info/aero/ILl8ozWuxnFYXIe2svjHhg

Veritasium
Veritasium

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.

12 päivää sitten
adorable
adorable

8

3 päivää sitten
adorable
adorable

7

3 päivää sitten
adorable
adorable

6

3 päivää sitten
adorable
adorable

5

3 päivää sitten
adorable
adorable

4

3 päivää sitten
Unkle Les
Unkle Les

0:50 - Alfred Einstein? The rest of the video was great, nicely put together and approachable for most people.

29 minuuttia sitten
Democratic Detox
Democratic Detox

0:47 How could there be bird sounds in space. This isn't real science 🧐🧐🧐

Tunti sitten
lucio p
lucio p

I liked the video, but i'd like to read some references that support your work? can you provide?

2 tuntia sitten
Robert Paulson
Robert Paulson

@16:20 If those "smart switches" are like mine, they cease to function the moment your ISP stops providing internet for whatever reason. Can anyone confirm if they work with your wireless router wifi signal even if your modem has lost internet for any reason? (something like "offline mode"?)

2 tuntia sitten
Marcus Hogans
Marcus Hogans

The Earth is stationary and “Gravity” doesn’t exist. Heliocentrist take advantage of mathematics and involve religion into it in order to brainwash mankind.

2 tuntia sitten
Manny Manito
Manny Manito

so why are big bodies bending time-space if it's not for their mass? are centrifugal force + accelleration time benders?

2 tuntia sitten
Don Jobin
Don Jobin

equivalence=physical illusion, inertial frame of reference = motion [all laws of motion must be applied, not laws of rest] edit* and yes you can preform tests that show the difference(1:55) and have been done

3 tuntia sitten
Geoff Bartlett
Geoff Bartlett

Check out Ken Wheeler the Bald Tattooed Monkey for even more fascinating insight into all things to do with GRAVITY, MAGNETISM AND LIGHT. It'll do your head in but it's worth it ✌

3 tuntia sitten
Jimmy Jam
Jimmy Jam

10:55 I must warn you sir, I'm pretty good at hangman.

3 tuntia sitten
Cjon wickham
Cjon wickham

This is stupid...gravity is force. It is not energy since black holes sucks in energy. There are more than basic four forces...electromagnetism gravity the strong and weak force. It's still studied and work in progress..science.

3 tuntia sitten
Anthony Arcaro
Anthony Arcaro

Loved the video, However can you please explain in simple terms why we all feel the earth accelerating equally when its accelerating through space around our galaxy!!! so confused, help this old man understand :-)

3 tuntia sitten
RedRocket4000
RedRocket4000

Opps bad link from PBS Space Time it being five years old. Current link https://www.youtube.com/watch?v=bJMYoj4hHqU

3 tuntia sitten
Nick
Nick

Is there gravity at the very center of earth ?

3 tuntia sitten
Sulli11
Sulli11

So then... How do we derive the acceleration needed to curve local space time? That would be fun to figure out.

3 tuntia sitten
pacbilly
pacbilly

How does this model account for the tides?

3 tuntia sitten
RedRocket4000
RedRocket4000

Also everyone should watch this on Frames of Reference https://archive.org/details/frames_of...

3 tuntia sitten
RedRocket4000
RedRocket4000

Don't know if it would help or not to mention how a seaming majority of people in Physics believe Gravity is a force at the Quantum level but this idea does not apply above the Quantum level and no experiment has shown Gravity is a force at the Quantum level it just the majority of Quantum ideas require it to be a force for the math to work.  I would like explanations like that of the Big Bang stop mentioning the separation of Gravity from the other Forces until it actually proved Gravity is a force again only at the Quantum Level. I would also like mentioning the fact that Gravity has a discrepancy compared to the other forces at the Quantum level as if this is a proven fact instead of speculation unprovable so far that Gravity is even a force at the Quantum level. They had hoped for proof Gravity leaking into other dimensions from the Neutron Star Merger Space/Time wave detection that would prove Gravity actually a force even if it not detectable otherwise was a force. This was a Null result no Universe wide extra dimension for Gravity to exist as a force and be drained into only the 3 plus one dimensions detected. I would like discussions and labels of the Space/Time Wave detectors be that and it not described as Gravity Waves. A ton of the confusion is the belief not proven of many scientists that Gravity is a Force at the Quantum Level bleeds into anything above the quantum level they are discussing. Physics and Astrophysics suffer from a lot of poor misleading names. Big Bang actually coined by a opponent of the theory is not a Big Bang at all no explosion involved as SpaceTime it self expanded everywhere we don't even know if there is a edge involved at all. Dark Matter for the unexplained gravitational (effect not force) anomalies it has been suggested Dark Gravity better naming but still misleading as Gravity is not a thing again. Dark Energy when we don't even know what Energy is, yes we really don't know what Energy is we only know of Energy as an effect as well even though all matter is just concentrated Energy and thus Matter is also a effect not a thing. Dark Energy is used for the unknown cause of the expansion of the universe and the speeding of that expansion. I poorly explained this feel free to blow your mind using good sources on what is energy to find out how it currently is just a math thing. Anything that explains Dark matter is considered Dark matter even if no matter is involved in solution. That smells like a funding lie almost to get money for particle research vs non particle causes. And of course anything that explains Dark Energy is Dark Energy even if the word Energy not used.

4 tuntia sitten
wazza33racer
wazza33racer

we could make exactly the same arguments about electro-magnetic forces................are they not a force also? Or do we need to refer to magnetic fields as magnetic-space curvature? Interesting because magnetism and gravity have the same force to distance math involved in their interactions. Trying to compare the effects of gravity to the curvature of the earths surface is simplistic and childish..........they are nothing alike. All we know is that gravity is relative to mass.............more mass = more gravity influence ( just as a bigger magnet, has a larger stronger magnetic field). gravity particles and gravity waves are all just made up nonsense to describe something that in reality has its closest match in electro-magnetism.

4 tuntia sitten
iseey0u0
iseey0u0

He said it folks.. flat space time... we live in a flat earth

4 tuntia sitten
Ojoj Ojoj
Ojoj Ojoj

dear, finally an explanation for everyone

5 tuntia sitten
WISDOM CROW
WISDOM CROW

I fell down a rabbit hole when I clicked on this video.

5 tuntia sitten
David Jackson
David Jackson

Just a bit of my understanding of this(With a little help from Einstein) that will hopefully plug some holes. So...To be more precise mass doesn’t really bend space, A concentration of energy has an effect on the surrounding space. See the Foundation of the General Theory of Relativity where Einstein said "the energy of the gravitational field shall act gravitatively in the same way as any other kind of energy". A massive body such as the Earth causes gravity because matter is concentrated energy, hence E=mc². But note that a massless photon also causes gravity, as does any kind of energy, not just mass-energy. So the energy doesn't actually bend the surrounding space. It makes it in-homogeneous. See Einstein's 1920 Leyden Address: "This space-time variability of the reciprocal relations of the standards of space and time, or, perhaps, the recognition of the fact that 'empty space' in its physical relation is neither homogeneous nor isotropic, compelling us to describe its state by ten functions (the gravitation potentials gμν) has, I think, finally disposed of the view that space is physically empty". This in-homogeneous space is modeled as curved spacetime, see papers like In-homogeneous vacuum: an alternative interpretation of curved spacetime. We say spacetime is curved, but don't think space itself is curved. (Note: not the curvature of space, but of spacetime. The distinction is crucial). Space isn't curved, instead it's in-homogeneous, mixed up in a non-linear fashion, so your plot of measurements or your metric is curved. As for what exactly in space is being bent, it's better to say what exactly is being altered,... and the answer has to be space itself. Don't think of space as nothing. (most of us do) Einstein thought of it as some kind of gin-clear ghostly elastic thing,(I prefer Vodka, but hey) something that could be stressed. As to how energy does this, nobody knows for sure. But think of space as some kind of clear jelly with lines drawn through it. Now use a hypodermic needle to inject some more jelly in the middle. You will stress the surrounding jelly, creating something akin to a gravitational field. The lines bend and flex, and that makes me happy. For now.

5 tuntia sitten
Jah Snoke
Jah Snoke

Still confused....

5 tuntia sitten
Patrick Rousseau
Patrick Rousseau

I don't get, at 13:18, how an external observer would see the light hit at the same height whilst the rocket is accelerating. All I can think of is someone using a water toy gun in an accelerating car. Clearly both a person inside a car and someone "watching it pass by" would see a deviation, no? Anybody care to explain where I got this wrong? I've understood the rest of the video pretty well, but can't wrap my head around what Derek says about that laser!

6 tuntia sitten
Ranjeet Saxena
Ranjeet Saxena

Great video, thanks! Question: If gravity is not a force, why is there a search on for a graviton?

6 tuntia sitten
schurix
schurix

Did anyone else notice at 9:34 how the guys behind the window moved up "faster" than the window itself? (they should move slower because they are further away). Like someone in the animation studio calculated with 10 m/s^2 because it's easier instead of 9.81 m^2 ... you lazy B*stard I really hope someone of the film makers read my comment because I think it's brilliant and funny :) And I somehow influence them just like they influence me!

6 tuntia sitten
View
View

The only thing that I have trouble with in this is the curved space-time idea. Why would space-time curve around an object of big mass, it would be because of a force that is curving it, would it not?

7 tuntia sitten
Josh Rieke
Josh Rieke

Absolutely brilliant video

7 tuntia sitten
Michael Cleveland
Michael Cleveland

Unfortunately this explanation is incomplete. General Relativity does not explain why an apple, attached to a tree separates from the branch in the first place. Within a given frame of reference, only the presence of a force can explain the initiation of acceleration from a motionless state: a=F/m. Geodesics only work to explain the motion of an object already in motion. Also note that disturbances in non-existent gravitational fields generate waves which carry energy which provides the non-existent force necessary to shift the parts of a gravitational interferometer. Not bad for something that doesn't exist, but I think you will need a plausible replacement for F=ma.

7 tuntia sitten
teipkep
teipkep

This is the new vsauce until youtube red takes over again?

8 tuntia sitten
Encik Kamri
Encik Kamri

"Earth is flat and accelerating towards the sky." That's the only explanation about this.

8 tuntia sitten
David Lazarus
David Lazarus

I'll admit that you make a good argument for gravity being an illusion. With my physics background, it might come as a surprise to you that I am actually a proponent of the Electric Universe theory. I think, in many cases, it offers a simpler explanation for many things than the Big Bang theory and also allows for a universe that is infinite in both time and space; something I also believe to be true based simply on what we CAN observe.

8 tuntia sitten
Tanaphar Plus Masks
Tanaphar Plus Masks

What do you mean gravitational fields don't exist? Fields are just things we project into space so that we can make a 'picture' of the various force-strengths 'hovering' around the object. Fields are just 'the whole series of forces' pictured at once. Fields are a human creation. Nothing about nature. It was never true that force fields 'exist'. Right? No? Except as 'human conceptual tools' to aid in navigating the object's behavior etc therein. What am I missing? As far as I always understood, there is no force 'there' and no collection of forces 'there' -- force field. This is just a human tool. Kind of like grid cast over space so that we talk about distances between things in terms of squares. We might call that a 'extent field'. Of course, it's not something actually there. It does not actually exist. So what am I missing here? Because apparently this is an important and somewhat new realization --- that gravitational force fields don't exist. But it was always like that. Even when talking about other force fields. They don't exist. In fact, some physicists (including Einstein) believed/believe that all those things are really somehow the same thing as gravity. Just we don't see how. Perhaps you meant something special by "it doesn't really exist". Perhaps you meant.... "We call it a force when an object is 'acted on' and the laws of physics ARE NOT the same to it compared to an object not acted on. And for gravity, they ARE the same, so therefore, it's NOT a force". OK, that's fine, because now we have a difference between circumstances and you are just saying "we call it force when it's like that" and "we don't call it force when its like this". No problem. But then this video just seems to be an elaborate clarification about how physics defines things, rather than some discovery about nature. Am I wrong? How so? Also what is the simplest example of a force that DOES exist? And what does it contain exactly which 'reveals' it as a force?

8 tuntia sitten
Ionut Mihai
Ionut Mihai

if gravity is not a force, why peoples from other part of the earth don't fell off?

8 tuntia sitten
David Lazarus
David Lazarus

Um . . . According to Brian Koberlein, a respected scientist with whom I do not always agree, gravity is not JUST a force as relates to general relativity. On that particular notion within the article linked below, I agree. https://www.universetoday.com/108740/how-we-know-gravity-is-not-just-a-force/

8 tuntia sitten
Q
Q

Gravity IS a force. Stop making people stupid with your nonsense.

8 tuntia sitten
LocoBizz
LocoBizz

Saying gravity is not a force is fine, but saying that gravity itself is an illusion seems to be incorrect. Gravity is the curvature of spacetime by definition. If gravity is an illusion, then so is the curvature of spacetime.

8 tuntia sitten
Ojas Kubal
Ojas Kubal

i'm just gonna go do a backflip now cuz i know gravity won't be able to screw me over now

9 tuntia sitten
Commando303X
Commando303X

So, Phoebe Buffay was right, after all...

9 tuntia sitten
nofreewill
nofreewill

But don't we feel only things that makes our "sensors" deform? We don't feel if we were in a field of force because there is equal force acting on all of our particles. There needs to be a gradient to make our sensors stretch.

9 tuntia sitten
Krichna Drofdel
Krichna Drofdel

Sooooo...... We're not moving? 😵

9 tuntia sitten
hakan kaan
hakan kaan

then how the planet has been occured ? and if its true i wondered what happen when you are create aan emptyspace in the earth center ?

9 tuntia sitten
Nick Overstreet
Nick Overstreet

You look a bit like Elon Musk

10 tuntia sitten
Scaff 1989
Scaff 1989

yeah cause the earth is flat and gravity isnt real

10 tuntia sitten
Etienne dk
Etienne dk

If gravity is a result of acceleration pushing us into the floor, then why do people on the other side of the planet not feel lighter?

10 tuntia sitten
Przemek Kardyś
Przemek Kardyś

The reason why accelerometer shows nothing is that centrifugal force from velocity, and centripetal force from gravity equals and reduces in every single quantum of matter in this spaceship. It's not the military centrifuge, that keeps in place only tightly secured pieces, and the rest wanna fly away. It can grab every single atom of human body and the ship, so it moves the same way, so there's no feel of any force.

10 tuntia sitten
/OVERDRIVE\
/OVERDRIVE\

as much as i want to understand this i just dont

10 tuntia sitten
RBEmpathy
RBEmpathy

This is big globe propoganda! Embrace the Lord! Repent! They're just coming up with even more complex ways of selling a lie to you. Wake up! Lol jk - awesome video!

11 tuntia sitten
GreenRay
GreenRay

the earth is curved too though. so they don't fly straight. if you stay the same height moving along the earth's surface you still go around it. if you stopped curving, you'd eventually leave the earth's atmosphere, or crash onto the surface.

12 tuntia sitten
StankyBaboon
StankyBaboon

I’m still confused on why the earth isn’t expanding since gravity isn’t a force.

12 tuntia sitten
Van Dalit
Van Dalit

I doubt make a question here have sense, but idk. i´m watching something of neil degresse tyson and hawking right now, and a wonderfull subject show up; The stars "collapse" on their own gravity, if gravity is not a force, what or why the stars collapse?

12 tuntia sitten
Eduard Greta
Eduard Greta

Bunch of bs.

12 tuntia sitten
Mike Bou
Mike Bou

Congratulations, you just proved that Time Travel is a mental disorder.

12 tuntia sitten
murcielago Batman
murcielago Batman

I don't get it then what weight?

12 tuntia sitten
Jesse Whitchurch
Jesse Whitchurch

Probably the most intriguing video I've ever seen. Crazy

12 tuntia sitten
Tom Mannix
Tom Mannix

This channel does my head in. Love it! But man...

13 tuntia sitten
Daddy Earth
Daddy Earth

Stop winding-up flat-earthers.

13 tuntia sitten
YoutubeR
YoutubeR

does the empty space in the atom increase with the expansion of the universe ie:- are they more tightly packed so smaller in the early universe and would that change its property's like density gravity Wot would we notice if we got twice as big at the atomic level if spacetime length has doubled due to expansion ????????

13 tuntia sitten
Gordon Burford
Gordon Burford

2:05 - you could look down.

13 tuntia sitten
lingerslongest
lingerslongest

This video curved my brain. I also enjoyed the explanation with the cosmic squirrel done by The Science Asylum : "The REAL source of Gravity might SURPRISE you" https://www.youtube.com/watch?v=F5PfjsPdBzg

14 tuntia sitten
Aleksander Medella
Aleksander Medella

Only me is bothered by his tiptoes coming out of the spaceship?

14 tuntia sitten
Codademy
Codademy

Who is this guy? 😂

14 tuntia sitten
David Stevens
David Stevens

If satellites and spacecraft in Earth orbit are just following a straight line path through spacetime that is curved by the Earth’s mass, why doesn’t a beam of light also follow the same path and orbit the Earth?

14 tuntia sitten
Storm At Home
Storm At Home

So, Iam hanging massive steel ball on tape. And the tape is stretching... No field, obviously :)

14 tuntia sitten
salg13
salg13

I just watched this and enjoyed it quite a bit. I've always considered there to be two models for gravity. Relativity; which has curved spacetime and is described here, and the Quantum Theory; in which gravitons are predicted. These two models work differently and will someday, hopefully, be reconciled. This is similar to Relativity and the Theory of Gravity; they both work, but need to be consolidated.

14 tuntia sitten
Burkhardt Family
Burkhardt Family

im really confused, if the Earth is accelerating in to us, how do the people at the "bottom" of the Earth not fly off. Physicists of Youtube help me!!!!

14 tuntia sitten
Tom Finochio
Tom Finochio

Tell me that again, after you drop a 100 lbs on your foot!

14 tuntia sitten
Brent Birsa
Brent Birsa

You brought freshness to an old repeated topic and I think that showing multiple equations in a logical sense helps people evolve their thinking. I would really like a part 2 describing the Wheeler quote. 6:00 I really liked how explicit you were showing the curved space time around the Earth and even showed standard trampoline/well 3D demo is better planar. IMO: Square space should not be taught except for a way to make measurements easier because sometimes the 1st thing learned sticks and it takes so much time trying to convert perceptions. 6:52 You quoted John Wheeler, but to me, this is the crux of gravity and I NEVER HEAR HOW THE 'TELLING' WORKS and assume Least Action, which is voodoo fundamental! Will there be a next video explaining how space knows how to change with energy/matter? How is this messaging done without a force? It sure does spread like other forces. Why isnt the information transfer between energy/matter and space time called Gravity force? 7:36 & 9:12 I don't understand "Equal and Opposite forces cancel so no net force". I wish you had the stick figure do a squat and asked why he would tire quickly (f=ma) if he is at rest and not accelerating (any reference). Try a plank for minutes @ 1g and tell me you can't feel your back NOT KEEPING UP. I like that you brought up that Electromagnetism/Light is used by matter (Planet, human and rockets) but it would have been nice to explicitly hear how and how much of that force is being used. I wish you would have mentioned accelerometers (common in phones and watches) continuously read 1g away from the Earth when placed on a table, which allows it to orient similar to a magnetic compass. I think it is amazing how far a satellite could travel at constant 1g acceleration and it makes me feel better about my short plank times. If I let go of an object while moving on my bike it wont continue with me and I can feel doing 'effort' while holding myself and anything I am carrying until I let it go and it does not stay with me. We have to think about sideways vs Earth inertia/space shape in everything we do so why do we need a rocket/elevator vs Earth acceleration examples or saying Gravity would need to weigh objects so that it can give correct force to drop at the correct speed. Playing sports takes an amazing amount of judgement that becomes somewhat innate in determining how inertia will affect a ball horizontally and vertically. Before I knew of relativity, I found much in classical mechanics annoying (energy is a worse topic and later discover some are called fictitious) so why do we teach and act like it is innate to be inversed? Sometimes physics discussions seem too defensive for old information from the 1600s and not explained by 'depends which reference that you pick'.

14 tuntia sitten
Robert Mecalis
Robert Mecalis

WTF Balderdash.

14 tuntia sitten
Filipe N
Filipe N

The two people walking in the geodesics would never come together if they stopped walking. Although impossible, since everything in the universe is moving, if earth stopped moving would there be no gravity? If the universe stoped expending gravity would no longer exists?

14 tuntia sitten
Etimespace
Etimespace

The so-called gravitational pushing forces. The pulling forces and curving space are a hiss. It is good to understand this first. The substance consists of expanding densities that recycle the expanding pushing force. All the expanding nuclei of atoms recycle the expanding dark pushing force which has e.g. the nature of expanding electrons and expanding photons. 1. The surface of the expanding Earth pushes us away from the center of the expanding Earth. 2. A pushing force through our body so that it originates from every expanding atomic nucleus of the Earth and thus pushes each expanding quark of our expanding body in separate expanding densities away from the center of the expanding Earth. 3. The expanding pushing force from the zillion-expanding quarks of billions of galaxies that collides with every expanding quark in our body and pushes them in separate expanding densities wherever it was going. And this pushing force is thus also pushing through the expanding Earth, experiencing a change in its density due to the interaction with the expanding matter of the Earth. 4. An expanding pushing force that originates from an expanding Earth and protrudes away from the Earth by interacting with an expanding pushing force pushing toward an expanding Earth. Here, it is good to note that, for example, the mass, state, and density of each expanding planet are different, so the expanding thrust from them affects the expanding planet differently with the expanding thrust. 5. The expanding planet thus interacts with the self-penetrating expanding thrust densities, and thus the mass, volume, and density of the planet are defining how much these planetary expanding densities exert a thrust on each separate expanding quark of our expanding body as separate objects. And that is, therefore, related to the accelerating movements in which our bodies are involved so that we cannot sense them with the help of our bodies. Probably too much for you. Accelerating movements we did not sense with the help of our expanding body. 1. Accelerating motion away from the expanding Sun. 2. Away from the center of our expanding galaxy. 3. Away from other expanding galaxies. 4. Away from an object that is really really far beyond the visible universe expanding in space. 😃

14 tuntia sitten
NichiRo Сhannel Озвучка Японских Роликов
NichiRo Сhannel Озвучка Японских Роликов

*If gravity ain't force, gravity wave also not force??? In the same way of thinking, for example pressure is not force and many many other phenomens relevant to "force" ain't force?*

14 tuntia sitten
Anibal Santiago
Anibal Santiago

Here's an idea show scientific evidence for gravity by way of the scientific method. Next explain Newton's Apple falling from a tree only using Einstein's equation. Do not reduce them down. You won't be able to do that either they don't solve for more than one Mass. So it's an absolute fact that there is no scientific evidence for gravity. Can't wait to see the backlash I get for this comment

14 tuntia sitten
John Coppock
John Coppock

Beautiful, beautiful videography. Not sure if you did this all by yourself. If so, you are a one-man production studio. Regardless of this it is probably the most polished YouTube video I have ever seen.

15 tuntia sitten
OldManLink
OldManLink

I just have one question (I am still only half way through, but I have to ask before I forget) - what's with the giant alcohol molecule floating beside you in the spaceship? Are you saying we need to be drunk to understand this?

15 tuntia sitten
L B
L B

Both charges will NOT radiate: The free-falling and the one at rest with respect to earth will NOT radiate. The Abraham–Lorentz force which is related to the radiation produced by accelerating charges depends on the derivative of the acceleration (Also called jerk). Both have constant acceleration and therefore will not radiate

15 tuntia sitten
Random Garbage
Random Garbage

this is an amazing video. explained gravity extremely well

15 tuntia sitten
iamlsusam
iamlsusam

When he hits the ground...

15 tuntia sitten
gelatinous cube
gelatinous cube

Soo.... Flat Earth?

15 tuntia sitten
Truth Prevails
Truth Prevails

@Veritasium Here's one for you....BTW I love your videos....I like you dude, I am trying to help you....... think about this...... Okay, I am sure you have a powerful zoom camera.......take that camera and consider it's zoom capabilities......... Try to zoom further than it's specified capabilities and see what kind of clarity you get in your images........ You can verify yourself, how far away you can actually see....Then take that same camera, zoom in on the moon........ Is it possible to get that clarity from 238,000 miles away? I think not..... You know not...... When you realize the moon is smaller and more local as transverses within our atmosphere, you will view the entire meaning of your existence within this world where EVERYTHING and EVERYONE in intertwined and synergistically harmonious. None of this is even fathomable if everyone believes a fairy tale of space and light years apart formed by an explosion of nothing into something..... There IS a CREATOR which IS that energy that connects us all........ I would love to see you explore this little test to determine if it is possible to zoom in on an object 238,000 away using a camera with only 83xs zoom capabilities..... Heck, phone cameras are capable of moon zoom. Is that possible my friend? It's not..... SO I don't expect a video on it anytime in the near future.....

16 tuntia sitten
Scott Leaf
Scott Leaf

Way to take it up a notch with your production values

16 tuntia sitten
Томат Огородов
Томат Огородов

Why replace curved line with curved space?

16 tuntia sitten
Truth Prevails
Truth Prevails

The cosmology you refer to uses 100% assumptions. The distances or the composition of objects allegedly in space, millions of miles away, cannot be determined....Only assumed.....

16 tuntia sitten
Curtis Hooper
Curtis Hooper

Also: https://youtu.be/EmrZ3ZaXmS4

16 tuntia sitten
Truth Prevails
Truth Prevails

If the FACE of the earth has it's center, which it does........then the same thing would happen as you move from the outer parts towards the inner parts. Just as a piece of pie comes to a point at the center of the pie, the same thing happens on the FACE of the earth. I am surprised that you even used this analogy to try to convince people the earth is a globe just because the lines meet in the center. I know you, after making this video, have even considered yourself, what if the earth really IS NOT a globe and is 100% level? WHat if that is true? How would I know? Well, they claim a radius of roughly 4000 miles (kinda small-don't ya think). Using this radius, there should be a GEOMETRICAL horizon at no more than 1.25 miles multiplied by the height of the observer, in feet, away from you...Therefore, if you EVER see the earth beyond this point, it is obviously NOT, EVER cirving away from you..... WIthout the radius and without a curving earth, the spherical earth CANNOT exist... This my friend, will change your entire reality............

16 tuntia sitten
Jeremy Owens
Jeremy Owens

Now I'm just even more confused.

16 tuntia sitten
edge films
edge films

FORCE/FRICTION causes the gravity to exist, thats the pulling factor!

16 tuntia sitten
David Jackson
David Jackson

Okay, fantastic video, but how would this relate to gravity waves?

16 tuntia sitten
Laurent H
Laurent H

Of course gravity is a force, and a gravitational fields exist, hence we have "potential energy", that can be converted to kinetic energy and vice versa, for example in a pendulum. I mean, you was on school ? Teacher tells that. The rest is BS, we are not here to believe in "space time" instead of god.

17 tuntia sitten
Idan Sagiv
Idan Sagiv

Derek, I wondered, where I can get information about the source from which you took the equation 10:13, including recommendations sources to study the subject in depth Thanks!

17 tuntia sitten
Glade le joueur
Glade le joueur

lol at first I was confused now I just feel dumb

17 tuntia sitten
Jeremy Owens
Jeremy Owens

Same brother. Physics have always hurt my head and I think having a solid understanding of the fundamentals would help a lot.

16 tuntia sitten
Game Account
Game Account

Does passing through an event horizon of a small black hole do anything to the explanation?

17 tuntia sitten
Aram Arakelyan
Aram Arakelyan

There is a very interesting and visual experiment that allows you to distinguish gravity from an accelerating rocket. If we hang two long pendulums, we will "notice" in the gravitational field that the pendulums are not exactly parallel to each other, although in a rocket they will lie on parallel lines. I don't know much about the theory of relativity, and I think I might be missing something. I will be very happy if someone answers PS I leave this question in many places to increase the probability of getting an answer

17 tuntia sitten
Rujjivit tapashcharya
Rujjivit tapashcharya

I didn't understand the curvature term in equation can someone explain?

17 tuntia sitten
Abhishek Shrestha
Abhishek Shrestha

i didnt get much... but it was fun to watch

17 tuntia sitten
Aditya Iyer
Aditya Iyer

only mass large enough is the sun. someone forgot about the proof of existence of blackholes which was the very idea that light bends around blackholes. no proof or experiment needed.

17 tuntia sitten
David Jackson
David Jackson

Fantastic! BTW I just posted a link in the Facebook page "Space Hipsters" that has over 19K members throughout the science community. Be prepared for a surge in subscribers!

17 tuntia sitten
Sree Hari prasad
Sree Hari prasad

It turns out Phoebe was right all this time.

18 tuntia sitten
Exauce Mayunga
Exauce Mayunga

Time doesn't exist, so space-time isn't a real thing. Gravity is a real force . Nice video tho.

18 tuntia sitten

Seuraava

Which Way Is Down?

26:11

Which Way Is Down?

Vsauce

Näkymät 18 milj.

The Infinite Pattern That Never Repeats

21:12

The Infinite Pattern That Never Repeats

Veritasium

Näkymät 8 milj.

LIGHTSABER vs BANK VAULT ($30,000 GIVEAWAY)

10:28

LIGHTSABER vs BANK VAULT ($30,000 GIVEAWAY)

the Hacksmith

Näkymät 4,1 milj.

SEURAAJIEN HAASTEET TESTISSÄ

6:26

SEURAAJIEN HAASTEET TESTISSÄ

Ilaripro - Football, Freekicks & Skills

Näkymät 44 t.

Larray - Cancelled (Official Music Video)

3:41

Asiat joita vain lapset sanovat | Korroosio

2:27

Asiat joita vain lapset sanovat | Korroosio

Korroosio Comedy

Näkymät 55 t.

Why do prime numbers make these spirals?

22:30

Why do prime numbers make these spirals?

3Blue1Brown

Näkymät 2,4 milj.

How Kodak Exposed The Atomic Bomb

13:20

How Kodak Exposed The Atomic Bomb

Veritasium

Näkymät 2 milj.

A Journey to the End of the Universe

30:01

A Journey to the End of the Universe

Cool Worlds

Näkymät 4,4 milj.

General Relativity Explained simply & visually

14:04

World's Lightest Solid!

12:02

World's Lightest Solid!

Veritasium

Näkymät 23 milj.

LIGHTSABER vs BANK VAULT ($30,000 GIVEAWAY)

10:28

LIGHTSABER vs BANK VAULT ($30,000 GIVEAWAY)

the Hacksmith

Näkymät 4,1 milj.

SEURAAJIEN HAASTEET TESTISSÄ

6:26

SEURAAJIEN HAASTEET TESTISSÄ

Ilaripro - Football, Freekicks & Skills

Näkymät 44 t.

Larray - Cancelled (Official Music Video)

3:41

Asiat joita vain lapset sanovat | Korroosio

2:27

Asiat joita vain lapset sanovat | Korroosio

Korroosio Comedy

Näkymät 55 t.

TWICE "I CAN'T STOP ME" M/V

3:41

TWICE "I CAN'T STOP ME" M/V

JYP Entertainment

Näkymät 9 milj.

Joe Rogan Experience #1554 - Kanye West

2:57:29

Joe Rogan Experience #1554 - Kanye West

PowerfulJRE

Näkymät 6 milj.

LISÄÄ LUUSEREITA!

1:06

LISÄÄ LUUSEREITA!

Summeri Yle

Näkymät 120 t.

MINUSTA TEHDÄÄN NÄKYMÄTÖN

10:35

MINUSTA TEHDÄÄN NÄKYMÄTÖN

Miska Haakana

Näkymät 48 t.

Lady Domina

3:27

Lady Domina

Haloo Helsinki! - Topic

Näkymät 131 t.