Talk:Gravitational redshift/to do
- spellcheck
- improve diction, etc.
- use proper citation templates.
- bring the lead in compliance with WP:LEAD
The Wikipedia article on Gravitational Redshift can be referenced to Lang "Astrophysical Formulae" Springer Verlag, second edition 1980 page 579 equation 5-279.
I believe the first equation for z is correct, but the second equation is not correct unless a further explanation is given.
Lang measures z at infinite distance from the mass center. Also in Lang the radius rs is the event horizon, and radius r is the location from which the photon is emitted.
With these explanations the second equation is in agreement with Lang.
These equations do not say what red shift would be measured at a finite distance inside the curved space of the same mass.