ChatterBank1 min ago
time??
Twins, seperated at birth.......one lives at the top of a mounatain and the other lives at the bottom. Is it theorectically true that if they met up after,say 70 years, one would actually be younger then the other.......?
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For more on marking an answer as the "Best Answer", please visit our FAQ.Yep, time dilation due to a gravitaional field (in theory weaker up the mountain) - general relativity.
However in practice the particular geology of the area and the location of the earth they lived in could have a greater effect on the gravity than the altitude and so this could quite easily be cancelled out.
The difference would be scarcely measurable anyhow.
This effect was once demonstrated by synchronising two atomic clocks and flying one around the world in a 747 and showing how one had slowed in comparisom to the other