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Physics, Astronomy & Cosmology / Re: Is the shift in the wavelength of light cancelled during free fall?
« on: 08/07/2019 08:47:12 »
True. But the Doppler shift depends on the relative velocity of source and receiver, and the gravitational shift, on their relative gravitational potentials. If both are in free fall towards a point gravitational source but at different altitudes, or even widely separated at the same altitude, all these numbers will be time-variant, so you need to consider the flight time of your photon from source to receiver.
I prefer to avoid "observer" in this forum as some people think physics is bound up with "consciousness" - whatever that is. AFAIK physics preceded anything that might be described as conscious!
I prefer to avoid "observer" in this forum as some people think physics is bound up with "consciousness" - whatever that is. AFAIK physics preceded anything that might be described as conscious!
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