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0 votes
1 answer
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Greatest relativistc mass possible for a single photon [closed]

I have been told that photons can not be blue shifted to the point where they become black holes, although a photon with a Planck scale wavelength would also have a relativistic mass equal to a black ...
Joseph Hirsch's user avatar
4 votes
2 answers
2k views

What happens to a photon in a black hole?

Assume a photon enters the event horizon of a black hole. The gravity of the black hole will draw the photon into the singularity eventually. Doesn't the photon come to rest and therefore lose it's ...
Kent Byerley's user avatar