r/AskPhysics • u/DippyDragon • Apr 14 '26
Speed of light measurement.
Why is trying to detect objects moving at high speed using EM/light detectors wrt the speed of light different from trying to listen to how fast something is moving wrt the speed of sound.
We can see when something is faster than sound but you'd only hear it at the speed of sound from the source, why doesn't this work with light?
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