All Questions
6
questions
3
votes
3
answers
182
views
Photonic black holes
"Can a photon turn into a black hole?" - usually the answer to this question is - it can't, because it has zero rest mass. However, when we derive the Schwarzchild Metric initially the $2M$ ...
- 1,161
2
votes
3
answers
422
views
Do light particles have thrust? [duplicate]
I understand that nothing is faster than light and that it can not escape a black hole. However, light particles may be fast, but perhaps it can't escape a black hole due to it's lack of thrust power? ...
- 37
3
votes
2
answers
227
views
Can a photon circle a black hole indefinitely?
Does a photon lose energy or redshift as it circles?
Will it's wavelength be the rest wavelength with centripetal and gravitational forces exactly cancelling?
- 182
0
votes
1
answer
671
views
How does black hole suck light? [duplicate]
I was asked the same by my friend. I said that gravitational attraction also occurs for high energy particles .
My friend said photon is not so very high energy particle which I found on net. He ...
- 1,149
2
votes
3
answers
362
views
Can photons be created without an electric charge involved?
It seems that in common ways how to produce light (electromagnetic waves, photons) must be involved particles with electric charge: accelerating electrons, spontaneous or stimulated emission, gamma ...
- 2,163
1
vote
3
answers
2k
views
Why can't light escape a blackhole? [duplicate]
Gravity attracts objects which have mass right. We know that light is massless so why does a black hole's gravity attract light?
- 1,925