@easyletgo actually no :) , since in space it's in a constant motion with no friction, in earth on that rubber sheet theres friction so the ball will loose its speed over time, luckly it isn't like that in space, or...or are we on a Giant 3D Rubber SHEET IN SPACE!?
@goldenageism thats a 2D example, in that example 2D=3D and the 3D disorting=4D, the sun bends into the 4thDimension because of its mass. Just think about it, imagine if he made a real example dealing with 3d, he'd have to make gravity to do that, this is a simple, easy example.
@SICKJ0KER sorry to inform you but actually, you are wrong. If an object has enough velocity it can escape the gravitational effect. How do you think rockets orbit the earth? They have enough escape velocity to do so. Given enough velocity and you would slowly increase your orbital distance which is what the moon is doing and why it is drifting further away. The other factor is, the further the moon moves away from the earth, the less effect the earth has on the moon.
@SICKJ0KER that's your reasoning? that's because there are other gravitational forces at work also pulling at the moon, and over long periods of time, they are having their effect.
This analogy is very stupid, because the movement of the ball here is *caused* by gravity, this is a REALLY HORRIBLE WAY of explaining how gravity works.
Before anyone jumps on me, no I'm not saying Einstein's theory is stupid (it is in fact, in my opinion, wonderful). But *this* particular analogy is really bad.
It is not just another way of looking at gravity - this theory is completely different from Newton's (although both will describe motion exactly the same). This theory predicts that gravity will bend light (not because it attracts light but because space itself bends around masses). This has already being verified. In fact LISA (check NASA website) will be measuring the distortions in space time caused by massive events (like supernovas and big bang itself)
@Defrector Gravity is gravity. The force of gravity is mass times acceleration and in a spacetime *representation* like this the curvature combined with gravity gives the effect of an object's centripetal acceleration around the curve. In reality, however, spacetime is much stranger because it is 4 dimensional, meaning all the information contained in a space-time demo like this is nothing compared to the true complexity of the idea. This is just an analogy.
I understand how your analogy explains Einsteins view of gravity, but what if your ball had no inertia to start with? How could curved space impart energy to a stationary object?
@Michel0555 You can describe gravity with a sheet however, which is what the purpose of this demonstration is. It is apparent gravity is more than a curved 2-d surface! Its 4 dimensional, at least - and yet everything we described gravity with before Einstein was 3-d and it worked just fine. Einstein showed however that it too extends into the 4th dimension and warps that too. So the sheet isn't the true representation of gravity, but it helps relay some of the key notions.
@illumined1 Your right and it may not only be the 4th dimensions, Gravity is said to extend throughout multiple dimensions as its weakness compared to other forces is minuscule.
@bignewgame You ask what causes gravity? Well, Einstein new this. I know this; and for the right price I can tell you. I promise you. What I'm gonna tell you is well worth the money
well said CrosJg, i think they know how gravity effects matter, but they dont know why matter warps space time. i think this is what the higgs boson is all adout.
people are horrible at explaining gravity, so horrible in fact that i believe hardly anyone understands it. einsteins map of space time is more of a way to calculate gravities effect rather then explain how gravity works. instead of explaining einstiens maps, these scientists need to be explaining how space time is distorted by physical matter.
Check out the video of the black hole eating matter, this gives me an indication of the space warps and curves and looking at it I still do not understand what is happening. A better analogy would like to get a ball submerge it in water and spin it very fast just to see the vortex and and curve forms it makes. My guess is that's a good analogy for what is going on. I also would like to try and control the wave forms using different shapes or speeds in an attempt to loop space.
Hmmm... I'm still not seeing this as an *explanation* of Einstein's gravity -- at best, it seems to be a description, which is not the same thing at all. Newton took a pretty good stab at 'describing' gravity with an equation that involves few variables and boasts a high degree of predictive accuracy. However, it was a source of lifelong embarrassment to him that he was never able to explain how gravity works. I don't feel like Science is any closer to such an explanation today.
My point is simply that if you carried out your heavy-marble-on-a-rubber-sheet analogy in outer space, there would be no distortion of the rubber sheet -- the two objects would simply float away from each other. It is a deeply flawed metaphor for describing the mass-based gravitational warping of space-time.
Doesn't the distorted-rubber-sheet analogy already presume the continual presence of a gravitational force pulling the marble downward into the depression in the sheet? It seems a bit misleading to create a visual metaphor that directly depends on the very force it is intended to describe. I'd frankly be far more impressed if you could explain how the rubber sheet experiment works in terms of Einstein's warped space-time without using gravity as the experimental fuel.
According to Einstein it is a product of Newtons law of attraction and the bending of space...If newtons law was pure gravity would have simply recombined the scattered elements of the big bang into the same huge mass it began as..But with einsteins theory of bends in space caused by energy...You get celestrial bodies bahaving as they do now..Einstiens theory was proven during a solar eclipse by astronomers..thus it became a law..No longer theory.
so at the end, the earth and other planets will hit the sun...
easyletgo 4 weeks ago
@easyletgo actually no :) , since in space it's in a constant motion with no friction, in earth on that rubber sheet theres friction so the ball will loose its speed over time, luckly it isn't like that in space, or...or are we on a Giant 3D Rubber SHEET IN SPACE!?
ratchetman4 3 weeks ago
Comment removed
easyletgo 3 weeks ago
@ratchetman4 I never been happier to find that i was wrong.. :)
easyletgo 3 weeks ago
This is an analogy but i still can't imagine how that works in reality because the spacetime is not flat like that rubber sheet
goldenageism 4 weeks ago
@goldenageism thats a 2D example, in that example 2D=3D and the 3D disorting=4D, the sun bends into the 4thDimension because of its mass. Just think about it, imagine if he made a real example dealing with 3d, he'd have to make gravity to do that, this is a simple, easy example.
ratchetman4 3 weeks ago
@SuperMagnetizer mind telling me how it works then genius ???
INMATE2468 1 month ago
Cute theory. But that's not how gravity works. Sorry to pop your warp bubble.
SuperMagnetizer 3 months ago
So we live in a flat 2D Universe of Time and Space
Films4You 3 months ago
@Films4You no dumbass this is just a very simplified version because the actual 3d is wayyyyyy to difficult to comprehend
ihavevideoatoo 3 months ago
@hasenj it's an analogy, which is not the real thing (duh)...which would be impossible to recreate what he is explaining
soaffb1337 4 months ago
This is just wrong wrong wrong.
1 example; the moon is getting farther from us.
SICKJ0KER 5 months ago
@SICKJ0KER sorry to inform you but actually, you are wrong. If an object has enough velocity it can escape the gravitational effect. How do you think rockets orbit the earth? They have enough escape velocity to do so. Given enough velocity and you would slowly increase your orbital distance which is what the moon is doing and why it is drifting further away. The other factor is, the further the moon moves away from the earth, the less effect the earth has on the moon.
Relativisticism 3 months ago
@SICKJ0KER What happens if you take a stone attached to a rope and start swinging it around? The rope stretches out a little.
victoneter 3 months ago
@SICKJ0KER that's your reasoning? that's because there are other gravitational forces at work also pulling at the moon, and over long periods of time, they are having their effect.
Earth's gravity isn't the only one pulling at it
desiromeo107 1 month ago
If earth bend space, then everything in the earth will be deform in the outer space right?
rulyvideo 6 months ago
This analogy is very stupid, because the movement of the ball here is *caused* by gravity, this is a REALLY HORRIBLE WAY of explaining how gravity works.
Before anyone jumps on me, no I'm not saying Einstein's theory is stupid (it is in fact, in my opinion, wonderful). But *this* particular analogy is really bad.
hasenj 6 months ago
@hasenj ive been thinking this since i was a kid, i thought there was something wrong with me
ih8pinkos 5 months ago
It is not just another way of looking at gravity - this theory is completely different from Newton's (although both will describe motion exactly the same). This theory predicts that gravity will bend light (not because it attracts light but because space itself bends around masses). This has already being verified. In fact LISA (check NASA website) will be measuring the distortions in space time caused by massive events (like supernovas and big bang itself)
amiyaiitkgp 7 months ago
the real question to this theory is "how does mass distort space/time?"
nofatchxplzthx 7 months ago
I'm not buying this theory. It requires gravity from above to operate!
1971SuperLead 7 months ago
@Defrector Gravity is gravity. The force of gravity is mass times acceleration and in a spacetime *representation* like this the curvature combined with gravity gives the effect of an object's centripetal acceleration around the curve. In reality, however, spacetime is much stranger because it is 4 dimensional, meaning all the information contained in a space-time demo like this is nothing compared to the true complexity of the idea. This is just an analogy.
illumined1 8 months ago
Still no explanation as to *why* mass bends space time, as opposed to other things like photons, etc. Higgs where the hell are you???
illumined1 8 months ago
Comment removed
goranryt 8 months ago
@Defrector Im not sure that i have got it right, but i think that the rubber he later pushes down is supposed to be gravity.
Ryalnotch 8 months ago
Can somone please tell me whats the name of this Nat Geo documentary? I wanna wacth the full version. please please please.
parthabanerjee1234 10 months ago
but u use 2 D explanation how is look like in 3 d space ?
pochul 1 year ago
@pochul Like a sphere
illumined1 8 months ago
Aether is real!
IWillRushYou 1 year ago
gravity on earth?
sonicheroin 1 year ago
he guys how bout this, the curved grid can also be used for watching pennies go into a charity box.
brseyfert123 1 year ago
I understand how your analogy explains Einsteins view of gravity, but what if your ball had no inertia to start with? How could curved space impart energy to a stationary object?
aceofspades25 1 year ago
where can i find the full video of this episode?
mathewkader 2 years ago
@mathewkader yeah, the name of the episode?
marlonbtx 1 year ago
@Netfruitcakemagnet
F=m*a
Force is equal to mass multiplied by acceleration.
So yes, an object with acceleration translates to force.
Michel0555 2 years ago
You cannot explain gravity with a sheet because space isn't a sheet, It's 3D
Michel0555 2 years ago
@Michel0555 You can describe gravity with a sheet however, which is what the purpose of this demonstration is. It is apparent gravity is more than a curved 2-d surface! Its 4 dimensional, at least - and yet everything we described gravity with before Einstein was 3-d and it worked just fine. Einstein showed however that it too extends into the 4th dimension and warps that too. So the sheet isn't the true representation of gravity, but it helps relay some of the key notions.
illumined1 8 months ago
@illumined1 Your right and it may not only be the 4th dimensions, Gravity is said to extend throughout multiple dimensions as its weakness compared to other forces is minuscule.
TechXMarine 7 months ago
@TechXMarine It is said. Yet to be demonstrated.
illumined1 7 months ago
@bignewgame You ask what causes gravity? Well, Einstein new this. I know this; and for the right price I can tell you. I promise you. What I'm gonna tell you is well worth the money
QPOproZaC 2 years ago
What about doing the sampe experiment in space?
femtophysiker 2 years ago
Rubbish.
The distance between the earth and the sun is 149,597,892 kilometers while the distance to the moon is only 384,403 kilometres.
Gravity is inversely proportional to the square of the distance between the masses.
There is your exlaination.
Also, since when is gravity a 'theory' ;)
EyesOnlyNL 2 years ago 2
@EyesOnlyNL What the fuck. I bet you just spouted a bunch of horse shit from your mouth just now. Enjoy your gold star, Aspie
95688kage 1 year ago
well said CrosJg, i think they know how gravity effects matter, but they dont know why matter warps space time. i think this is what the higgs boson is all adout.
0175201752 2 years ago
You're an idiot.
Fuzzylurrrve 2 years ago
people are horrible at explaining gravity, so horrible in fact that i believe hardly anyone understands it. einsteins map of space time is more of a way to calculate gravities effect rather then explain how gravity works. instead of explaining einstiens maps, these scientists need to be explaining how space time is distorted by physical matter.
CrosJg 2 years ago
pretty vague
Suasion 2 years ago
Check out the video of the black hole eating matter, this gives me an indication of the space warps and curves and looking at it I still do not understand what is happening. A better analogy would like to get a ball submerge it in water and spin it very fast just to see the vortex and and curve forms it makes. My guess is that's a good analogy for what is going on. I also would like to try and control the wave forms using different shapes or speeds in an attempt to loop space.
TTTopGun 2 years ago
Hmmm... I'm still not seeing this as an *explanation* of Einstein's gravity -- at best, it seems to be a description, which is not the same thing at all. Newton took a pretty good stab at 'describing' gravity with an equation that involves few variables and boasts a high degree of predictive accuracy. However, it was a source of lifelong embarrassment to him that he was never able to explain how gravity works. I don't feel like Science is any closer to such an explanation today.
cdewilde 3 years ago
My point is simply that if you carried out your heavy-marble-on-a-rubber-sheet analogy in outer space, there would be no distortion of the rubber sheet -- the two objects would simply float away from each other. It is a deeply flawed metaphor for describing the mass-based gravitational warping of space-time.
cdewilde 3 years ago
Doesn't the distorted-rubber-sheet analogy already presume the continual presence of a gravitational force pulling the marble downward into the depression in the sheet? It seems a bit misleading to create a visual metaphor that directly depends on the very force it is intended to describe. I'd frankly be far more impressed if you could explain how the rubber sheet experiment works in terms of Einstein's warped space-time without using gravity as the experimental fuel.
cdewilde 3 years ago
dose that mean were going to sink into the sun?
Catninjah 3 years ago
According to Einstein it is a product of Newtons law of attraction and the bending of space...If newtons law was pure gravity would have simply recombined the scattered elements of the big bang into the same huge mass it began as..But with einsteins theory of bends in space caused by energy...You get celestrial bodies bahaving as they do now..Einstiens theory was proven during a solar eclipse by astronomers..thus it became a law..No longer theory.
timetodepop 3 years ago