2007-08-26 17:56:41 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The gravity of a black hole can certainly change the direction of light. The speed however (like sound) depends on the medium through which it is traveling.
2007-08-26 18:02:15 · answer #1 · answered by de4th 4 · 2⤊ 0⤋
Yes gravity controls the speed and direction of light .But the force of the gravity should be greater like in a black hole .If we can provide such great gravity speed and direction of the light can be controlled ..However the speed of the light depends on the medium through which it travels .Even a change in the medium changes the direction of the light.A light travels in its maximum speed in a vaccum.
2007-08-27 02:09:51 · answer #2 · answered by ⇐DâV£ MaΧiMiÅnO⇒ 6 · 0⤊ 1⤋
In vacuum, light always travels in an absolutely straight line at speed c as measured by any local observer, regardless of gravity. However, because gravity bends spacetime, distant observers may observe the light beam to travel at a different speed in a curved path.
2007-08-27 04:20:28 · answer #3 · answered by ZikZak 6 · 0⤊ 0⤋
Check out the gravitational lensing effect (do a google search).
Yes, Gravity can change the direction of photons.
So, it would seem that it should have an effect on the speed as well, but I don't think that it does.
2007-08-27 01:37:38 · answer #4 · answered by asgspifs 7 · 0⤊ 0⤋
I think no
2007-08-27 02:36:08 · answer #5 · answered by spandanaraj b 2 · 0⤊ 0⤋