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Astronomy and Cosmology
Astronomy and Astrophysics
Red shift / Blue Shift - Gravity Well Roundtrip
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[QUOTE="Halc, post: 6399336, member: 678013"] The only thing that would have an effect is if the black hole (or mirror for that matter) is changing its distance from you, in which case there will be red/blue shift. The gravity doesn't have any effect at all from your perspective since you're measuring the light at the same potential as where it left you. That said, if I shine a light at a (small, distant) black hole and it comes back to me, it will take longer to make the round trip (as measured by me) than light from a mirror placed at approximately the equivalent distance. But assuming no relative motion, both will come back at the original wavelength. [/QUOTE]
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Astronomy and Cosmology
Astronomy and Astrophysics
Red shift / Blue Shift - Gravity Well Roundtrip
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