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quote:

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Originally posted by Zolee
Well as you remember light has mass as well so it's influenced by gravity.

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__________________
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Leagacy at the [VBB] - October 2001 - April 2002 - 555 posts
[url=http://www.3dap.com/hlp/hosted/the158th]The 158th[/url]

Well, well...
It's also true that the speed of light is a constant in all inertial systems, so even in a system that's bound to a "would-be" escaping photon. In that system gravity will reach the photon with lightspeed, so it will be intercepted.
Have you heard about the spacewar paradox?
There are two spaceships going at relativistic speeds in opposite directions and one of them shoots a gun at the other with perfect timing (which is impossible for relativistic calculations as well, but just lets assume) to hit the other ship. However in its system the target "shortens" and they take that into aim. On the other hand the from the target's system their ship has a normal length, so the attacker misses. However that's impossible...
What's the solution?

As for ligt mass:
Could you tell me where a photon is?
But then again if you do, can you tell me how fast it is?

It's a quantum, but it's not the mass that travels, but the wave expanding. See the Two Rift experiment for reference.

Well, well...
It's also true that the speed of light is a constant in all inertial systems, so even in a system that's bound to a "would-be" escaping photon. In that system gravity will reach the photon with lightspeed, so it will be intercepted.
Have you heard about the spacewar paradox?
There are two spaceships going at relativistic speeds in opposite directions and one of them shoots a gun at the other with perfect timing (which is impossible for relativistic calculations as well, but just lets assume) to hit the other ship. However in its system the target "shortens" and they take that into aim. On the other hand the from the target's system their ship has a normal length, so the attacker misses. However that's impossible...
What's the solution?

As for ligt mass:
Could you tell me where a photon is?
But then again if you do, can you tell me how fast it is?

It's a quantum, but it's not the mass that travels, but the wave expanding. See the Two Rift experiment for reference.

Light has momentum, not actual mass. The momentum of the photon is probably due to the repulsive effect of a photon on the charged particles that make up atoms, as a carrier of the electromagnetic force. The momentum is given by the formula:

Momentum = (Planck's Constant) / (the wavelength of the light).

Lower wavelengths (higher frequencies) have larger momentum values as the photons themselves carry more energy that will repel other electrons (or protons) with greater force.

When light is trapped "in" a black hole, ns33, is is actually just on the event horizon and is not moving in "our space" - it is perpetually on the verge of escaping but can't quite get there as it is fighting an equally fast-moving force. The best example that I can think of is in Stephen Hawking's 'A Brief History of Time', where he explains that light is trapped on the edge of the event horizon and gives a few light cones to demonstrate (I can't remember the page number and I can't check, as I don't have it on me).

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Light has momentum, not actual mass. The momentum of the photon is probably due to the repulsive effect of a photon on the charged particles that make up atoms, as a carrier of the electromagnetic force. The momentum is given by the formula:

Momentum = (Planck's Constant) / (the wavelength of the light).

Lower wavelengths (higher frequencies) have larger momentum values as the photons themselves carry more energy that will repel other electrons (or protons) with greater force.

When light is trapped "in" a black hole, ns33, is is actually just on the event horizon and is not moving in "our space" - it is perpetually on the verge of escaping but can't quite get there as it is fighting an equally fast-moving force. The best example that I can think of is in Stephen Hawking's 'A Brief History of Time', where he explains that light is trapped on the edge of the event horizon and gives a few light cones to demonstrate (I can't remember the page number and I can't check, as I don't have it on me).

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