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a Physics problem
Posted: Thu Mar 15, 2012 11:03 am
by fznfire
According to Doppler's law, the movement of source and the movement of receiver will lead to different frequency. Does this violate relativity which says that the law in all inertial frames are the same?
Re: a Physics problem
Posted: Thu Mar 15, 2012 3:23 pm
by admissionprof
fznfire wrote:According to Doppler's law, the movement of source and the movement of receiver will lead to different frequency. Does this violate relativity which says that the law in all inertial frames are the same?
No. Only the relative velocity enters into the formula - you must be looking at the nonrelativistic version. This forum is not the appropriate place for this question...
Re: a Physics problem
Posted: Fri Aug 11, 2023 5:01 pm
by htam9876
The question in the OP doesn’t concern SR. Doppler effect as a whole is a physical law in one reference frame.
If people must pull in SR in this case, then, the statement should be as below:
If Doppler effect can happen in reference frame S, then, viewing in another relatively moving reference frame S’, Doppler effect can happen too.
That’s a funny question to help freshman understand SR better.
(Piggy now actually is researching SR in meta physics level. My article “Research on the Root of Special Relativity” pointed out the inherent property of spherical electromagnetic wave is actually the root of the relativistic principle, and actually the relativistic principle is not applicable to the released photon. But only registered users can see it.)