Redirected from Gravitational redshift
In which G is the gravitational constant and c is the speed of light. The coefficient G/c2 = 7.414×10-29cm/g. For the Sun, M = 2.3×1033g and R = 1.394×1011cm, so Δλ/λ = 1.23×10-6. In other words, each spectral line should be shifted towards the red end of the spectrum by a little over one millionth of its original wavelength.
The gravitational redshift of the Earth can be detected using the Mossbauer effect. In addition, observation of much more massive and compact stars such as white dwarfs have shown that Einstein shift does occur and is within the correct order of magnitude.
See also: redshift
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