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Gravity and time 
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#1
Aug1703, 06:54 PM

P: 83

I'm either restating a well known property of general relativity, or really on to something, but I had a thought that if gravity is a constant acceleration in the 4th dimension, and time is considered to be the 4th dimension, could time in some way be considered the push that we believe to be gravity? or am I way off my rocker?



#2
Aug1803, 03:36 AM

P: n/a

by the way: spacetime concept for me is nothing else but velocity concept cause space and time only preset velocity.Why would velocity be so important? 


#3
Aug1803, 08:24 AM

P: 83

that had nothing to do with my original question. Is it possible that time and the acceleration we experience as gravity are one and the same?



#4
Aug1803, 11:19 AM

P: 52

Gravity and time
As far as I understand (not saying much) the 4dim is not time. In our 3d world we use time as a fourth dimension only to identify points in spacetime. The 4d universe that I was talking about is the 3 spacial dims we know and another dim perpendicular to those. Spacial 4d and 4d timespace is a completely different thing. I think.



#5
Aug1903, 10:32 AM

P: 83

It makes sense to me that if spacetime is considered to be 4d and our 'space' consists of the first 3, then the remainder, the time value, is the 4th.



#6
Aug1903, 04:22 PM

Sci Advisor
P: 2,510

I was just about to post that same thing over in the thread entitled, "Can You Explain How SpaceTime and Gravity Works"(or something like that). If I understand my GR correctly, then you are absolutely right; the fourth dimension that's being "curved" by gravity is, in fact, time. So as you enter a gravitational feild, your progress through time gets curved but, if you are standing on the surface of a planet, the planet gets in the way, continuously deflecting you off of the curved path your inertia tries to take. This continual deflection results in the acceleration felt as gravity. At least, that's how I understand it.



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