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4hv.org :: Forums :: General Science and Electronics
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relativity and stuff

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Bjørn
Fri Jul 07 2006, 12:03PM
Bjørn Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
Those that have an opinion on if Einstein was confused or not should keep an eye on this page: http://einstein.stanford.edu/

Clocks also run ever-so-slightly faster on the surface of the earth than in space.
When we recieve the signals from the GPS it is blueshifted because the signal is "falling" in the gravity field, so we observe time to go slower in our gravity field.
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WaveRider
Fri Jul 07 2006, 12:38PM
WaveRider Registered Member #29 Joined: Fri Feb 03 2006, 09:00AM
Location: Hasselt, Belgium
Posts: 500
Ooops! Indeed, I stand corrected! Clocks run slower in gravitational potential wells.....
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Dr. Dark Current
Sat Jul 08 2006, 11:33AM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
What do you think about this? At least for me it makes sense.

J.M.
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Bjørn
Sat Jul 08 2006, 01:46PM
Bjørn Registered Member #27 Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
I think it contains some interesting ideas that has little root in reality. Representing these ideas as some sort of theory is not honest. It also contains some startling errors like "600 km/hr, our speed with respect to the CMBR frame, is a very high velocity" that makes me suspect that he did not read what he wrote. If he does not take it serious then there is no reason for us to take it serious.
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IamSmooth
Sat Jul 08 2006, 05:28PM
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
Here is another question about relativity taken from Spacetime Physics.

I assume we accept the fact that clocks run slow when moving at high speed. If we have a train moving at 0.9c relative to earth the clock on the train runs slower than the train on earth. Now lets say a man is running against the train at the speed 0.9c such that his position doesn't change with respect to the earth. His clock should run slow compared to the clock on the train.

One would think that his clock is doubly slow compared to the earth clock; however, if he is not moving with respect to the earth wouldn't his clock run at the same speed as the clock on earth?
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