Moogle
Since the gravity of a black hole affects light, does a baem of light accelerate when it nears a black hole ? Just wondering.
It doesn't change speed -- but it changes direction.Originally posted by Moogle
Since the gravity of a black hole affects light, does a baem of light accelerate when it nears a black hole ? Just wondering.
nonsense.Originally posted by chroot
It doesn't change speed -- but it changes direction.
Physicists refer to any change in the velocity vector an acceleration, though -- so yes, the light does accelerate. Its velocity vector does not change in magnitude however, which means the light does not change speed.
- Warren
Or E = h νOriginally posted by selfAdjoint
A light beam always follow the shortest path through the vacuum. If space is flat that path is a straight line. But near a gravitational source it is a curved line, called a geodesic. Light follows it.
The gravitational potential will not acclerate the ligh, but it will change its frequency. For light, momentum is exhibited as frequency according to the equation momentum equals planck's constant times frequency. p=h[nu].
that thing that looks like a vee is supposed to be a nu.Originally posted by marcus
Or E = h ν
and p = E/c = hν /c
Yes, but that is a topic for another thread.dr-dock:
Can you put light on bread and eat it?