## Hawking radiation formula

*E=m*a*d*

*m*: mass

*a*: gravitational acceleration *d*: distance the mass *m*falls

The mass is the mass of a virtual photon in our case and the distance is the distance a virtual photon moves in its lifetime. Since virtual photons have such a short lifetime they won’t get very far during that (24 nanometers for a virtual photon of orange light). So we can assume the gravitation to be constant and therefore use this formula.

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