All Questions
4
questions
2
votes
2
answers
189
views
Does the frequency of light have any effect on gravitational lensing? [duplicate]
General relativity considers gravity as the curvature of space-time instead of a force. Therefore, what is bent around an astronomical object is the space-time itself. The light just follows the path ...
- 720
0
votes
3
answers
276
views
Why does gravitational lensing bend light rather than absorbing it?
I've read that gravitational lensing bends the light; I am a little confused about black holes and why lensing produces different results. Black holes absorb light whereas lensing should have also ...
- 111
1
vote
1
answer
131
views
Slow light and gravitational lensing
It has been proposed that the Sun's gravitational lens be used to observe distant objects, but according to relativity a spacecraft would need to be 550 AU away in order to take advantage of the ...
- 13
6
votes
4
answers
3k
views
Gravitational lensing or cloud refraction?
My current understanding of gravitational lensing follows
When a star or other massive body passes between us and another star, the phenomenon
generally labeled 'gravitational lensing' occurs. The ...
- 171