PhysicsGeneralQuality 61 · Exceptional

Special Relativity and Time Dilation

Wilma Young Verified Teacher

@author · 2026-09-04 · v1

7 min read

Einstein's special relativity says the speed of light is constant for all observers. A moving clock runs slower from a stationary observer's view:

t' = t / \sqrt{1 - v^2/c^2}

. GPS satellites move fast enough that without correcting for this effect, positions would drift by kilometers per day.

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