A new debate is on and its a hot one. "That that the light reflected off the circular rim of a mirror-like wheel shows zero Doppler effect between the source and the receiver in the case of the wheel rolling without slipping" Affirmative: Tach Negitive: James R Who do you think will win? In the formal debate thread, Tach has posted is proof for all to read.
I will refrain from voting for a while to hide my opinion. Hint, take out the realtivstic part of the math and the answer, IMHO, is the same. It makes the math easier.