Ives-Stilwell-Experiment  and the Relativistic Doppler Effect

Experimental result:

The Ives-Stilwell experiment and others (Mössbauer Rotor) show, that the emitted light frequency f(v) of a source with velocity v differs from the frequency f(0) of a non-moving source by

f(v) = f(0) / Lorentz-factor

with Lorentz-factor = 1/ square-root (1- (v² / c²)) ;



What can be concluded by this?


Choice of test answers:

A) Atomic energy changes by movement

B) Time changes by movement