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Physics, Astronomy & Cosmology / Re: Gravity
« on: 01/12/2004 15:53:31 »
Thanks to all contributers, a lot of interesting replies.
I think Sandwalkers comments about the light cone missed the point. Yes the forces on the earth would be pretty well in equilibriun axcept in the direction of the sun, put here the pushing force will be attenuated so that the net force is towards the sun.
The contributions abou speed were interesting. I was under the impression that nothing could be accelerated beyond the speed of light due to the infinite energy reqiirements, but what happens if something is travelling faster than light like a graviton. What laws of physics apply. What happens to its mass. I presume it still will have energy and be able to push ordinary matter around
I think Sandwalkers comments about the light cone missed the point. Yes the forces on the earth would be pretty well in equilibriun axcept in the direction of the sun, put here the pushing force will be attenuated so that the net force is towards the sun.
The contributions abou speed were interesting. I was under the impression that nothing could be accelerated beyond the speed of light due to the infinite energy reqiirements, but what happens if something is travelling faster than light like a graviton. What laws of physics apply. What happens to its mass. I presume it still will have energy and be able to push ordinary matter around