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What is the difference between gravity potential, and gravity potential energy?Do they have different values?
So when a physicist observes that my clock is running slower than his clock, and I observe that his clock is running faster than mine, and he tells me that we can deduce that we are in differing gravity potentials - does this mean that we are experiencing differing amounts of gravity potential energy?
Quote from: timey on 04/03/2017 05:49:06What is the difference between gravity potential, and gravity potential energy?Do they have different values?See - https://en.wikipedia.org/wiki/Gravitational_potential
It is analogous to electric potential with mass playing the role of charge
Quote from: timey on 12/03/2017 02:42:22So when a physicist observes that my clock is running slower than his clock, and I observe that his clock is running faster than mine, and he tells me that we can deduce that we are in differing gravity potentials - does this mean that we are experiencing differing amounts of gravity potential energy?You don't experience potential energy.
And...if one is aging in keeping with their clock, it could be said that one is experiencing time in the same way the clock is.
You could of course just say that time runs faster where the clock is and be done with it, apart from the observer dependant issue which fudges things up a tad, or you could look for a physical reason why time is running faster for both the clock and the person, and indeed consider a physical cause for the phenomenon of time itself... If one wanted to, which I do.
If time dilation at h from M where to be caused by potential energy, then value of m would not affect the rate of this time dilation,
a rate of time caused by gravity potential energy could be thought to be affected by m in the same way as m affects a.
In addition to post above:In the meantime, a person's body at an h from M and the clock he has with him will both have a value of potential energy.If we drop them both from that height onto their separate trampolines, both will land on trampoline, and bounce to same height at same time.The person will have a greater m, greater p, and greater potential energy throughout than the clock will, but a remains the same for both.If time dilation at h from M where to be caused by potential energy, then value of m would not affect the rate of this time dilation, just as m value does not affect a in free fall, therefore a rate of time caused by gravity potential energy could be thought to be affected by m in the same way as m affects a.(It occurs that someone might want to move this thread to New Theories as I am straying from currently held notions now)
Quote from: timey on 14/03/2017 00:34:15And...if one is aging in keeping with their clock, it could be said that one is experiencing time in the same way the clock is. obviously. Just like two people watching the same film from adjacent seats.
Nonsense. pe = mgh. It's linearly dependent on m.
You don't experience gravitational time dilatation. Your clock is always correct. You can however observe it.
Ok - So recognising that when we say that the movie is 1 hour long we are using the guy sitting in the cinema's clock to measure the length of the movie,
and also recognising the fact that the movie was produced/filmed in a location where a clock will agree that the movie is 1 hour long...
When we say that the movie would take 2 space hours 'to reach(?)',
or is that for the observer in the higher potential 'to view(?),
we must recognise that we are also making this assessment based on the timing of the clock in the cinema.