- #1

bernhard.rothenstein

- 991

- 1

L=g(U)Lo (1)

L'=g(U')Lo (2)

in I and in I' respectively. Eliminating Lo between (1) and (2) we obtain

L=L'g(U)/g(U'). (3)

Expressing the right side of (3) as a function of U' only, via the addition law of relativistic velocities we obtain

L=L'g(V)/1+u'V/cc (4)

an equation that relates two non-proper lengths.

Is it correct to consider that the derivation presented above represents a derivtion for the relationship betwee the wavelengths of the same acoustic (mechanical) wave that propagates with speeds U and U' relative to I and I' respectively?

Did you find that derivation somewhere in the literature of the subject?

Thanks.

**sine ira et studio**