Quote:
Originally Posted by sjastro
It doen't matter if each observer measures a different rate of change of the metric components, the resultant gravitational wave still travels at c. The difference measured by each observer is the frequency of the wave.
This is how light behaves as well. All observers will measure the speed of light as c, but the frequency of light due to Doppler shift will vary according to the motion of the source relative to each observer.
Regards
Steven
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I'm aware of the apparent doppler shift (light's signature change within a field of acceleration), but that's not my argument. What's the benchmark going to be, ie how do you know if your results are going to be true if you have no frame of reference with which to measure against? Any data will be related to the observer's (measurement device's) frame ONLY. This is not a true measure. Any result will merely be an apparent measure for a single frame of reference only. And since we're talking about observations at a distance, a second observer would (perpendicular to the experiment say) would not be able to verify any result as it's frame of reference is unique.
The speed of light through space depends upon the properties of the light and the properties of the space, therefore two separate observations cannot ever verify the same event. This also includes the doppler frequency shift of light will be entirely depandant on the properties of two separate spaces and two separate photons...thus, two equally valid and separate realities...ergo the name Relativity.