# Black Hole Gravitational Redshift Calculator

When an electromagnetic radiation emitted from an object is shifted to the red end of the spectrum, it is said as gravitational redshift or einstein shift. The gravitational redshift at the black hole region which does not allow anything to pass out with such a gravity pull can be calculated based on the gravitational constant, light speed and body mass and distance from mass center.

## Calculate Black Hole Gravitational Redshift

When an electromagnetic radiation emitted from an object is shifted to the red end of the spectrum, it is said as gravitational redshift or einstein shift. The gravitational redshift at the black hole region which does not allow anything to pass out with such a gravity pull can be calculated based on the gravitational constant, light speed and body mass and distance from mass center.

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#### Formula:

**Black Hole Gravitational Redshift **

v_{∞} / v_{r} = (1 - (2GM / rc^{2}))^{1/2}
**Where,**
v_{∞} = Frequency at Infinity
v_{r} = Frequency at r
G = Constant of Gravitation
M = Mass of Body
r = Distance from Mass Center
c = Speed of Light