Question: Why does the global positioning system ( GPS ) need to account for the effects of general relativity? The effects of gravitational time dilation on
Why does the global positioning system GPS need to account for the effects of general relativity?
The effects of gravitational time dilation on the surface of the Earth are large.
The effects of gravitational time dilation at the radius where GPS satellites orbit Earthare large.
The effects of gravitational time dilation are small but accurate time measurments are required to precisely measure the distances from GPS satellites.
The effects of gravitational time dilation are small but general relativity causes the GPS satellite orbits to precessand this needs to be accounted for in measuring distances from GPS satellites.
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