Blackholes and light

  • #1
If blackholes were able to stop light from escaping , then would it mean that photons do have a certain mass (no matter how much negligible it is ) and if it does then how can something that has mass (photons) travel at the speed of light. wouldn't the speed limit aplly to them too?
 

Answers and Replies

  • #2
Borg
Science Advisor
Gold Member
1,937
2,697
If blackholes were able to stop light from escaping , then would it mean that photons do have a certain mass (no matter how much negligible it is )
No, that is not the reason that they cannot escape. Take a look at some of the similar discussions below or ZapperZ's statement in this thread.
This issue has been discussed to death in several threads in both the Quantum physics forum, and the SR/GR forum. Please do your search there and figure out how gravity is a spacetime curvature, and why light follows the "geodesic" of that spacetime curvature. It has NOTHING to do with light having a mass.

Zz.
 

Related Threads on Blackholes and light

  • Last Post
2
Replies
27
Views
4K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
8
Views
5K
  • Last Post
Replies
22
Views
4K
  • Last Post
Replies
4
Views
885
  • Last Post
Replies
17
Views
3K
  • Last Post
Replies
15
Views
3K
  • Last Post
Replies
7
Views
3K
  • Last Post
Replies
2
Views
2K
Top