On Thu, 31 Jan 2008 09:22:50 GMT, "Ockham" wrote:


"The Ghost In The Machine" wrote in message
...
| In sci.physics.relativity, Randy Poe
|

| | - If a TWLS be conducted between a source and a moving mirror,
| | then the time taken (as observed by the source) of the
| | light beam from source to mirror and back to source is
| | exactly twice that of the time taken from source to
| | mirror. In other words, t_AB = t_BA.
|
| Not true, the reflected beam will be doppler shifted.
|
| Yes, both wavelength and frequency experience a doppler shift.
|
| Only in SR

Correct.


| (though both have been observed).

That is actually funny since you cannot say by whom, when
and under what circumstances.


| In Newtonian
| math the frequency changes as per the Doppler, but the
| wavelength is unaltered.

Incorrect.

Ghost is correct...as he sometimes is...
The wavelength of any TRAVELING wave is absolute and frame independent.

The 'wavelength' of an OSCILLATOR (such as a spinning wheel), if defined as
'the distance it travels in one of its cycles', IS of course frame dependent.

Oscillators don't actually possess 'wavelengths'.
I think that's where your confusion lies.


Henri Wilson. ASTC,BSc,DSc(T)

www.users.bigpond.com/hewn/index.htm