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Physics, Astronomy & Cosmology / Re: Force upon light
« on: 23/09/2005 03:53:19 »
I will try an answer, though I am by no means the final authority on the subject.
1) all tests we have been able to think of indicate no mass.
2) we do stop them, it is called a mirror. (they bounce well)
3) you have to be able to reach out and touch the photons. So far we have found nothing that can touch them, gravity included.
4) As has been said before, photons are formed by electrons and adsorbed by electrons. They are simply carriers of energy between electrons it seems.
5) Light is not bent by gravity, but it can be bent by passing though a gravity well that distorts time, and time distortion will bend light. So will a prism and a defraction grading. These two items bend light more or less by their wavelength. You often hear the argument that gravity bends light, but the theory says it is the time distortion caused by gravity. So gravity does _NOT_ directly act on a photon. There are theories that calculate a moving mass for photons as if gravity were directly operating on photons (F=MA), but the Special Theory of Relativity does not require or say that gravity acts directly on photons.
6) Photons are made when an electron decides to shed energy to become more stable. Offer an electron good company, and a bottle of beer, and they will sit down, kick their feet up, and settle into a lower energy state in a nano-second, and kick out the extra energy as a photon.
David
1) all tests we have been able to think of indicate no mass.
2) we do stop them, it is called a mirror. (they bounce well)
3) you have to be able to reach out and touch the photons. So far we have found nothing that can touch them, gravity included.
4) As has been said before, photons are formed by electrons and adsorbed by electrons. They are simply carriers of energy between electrons it seems.
5) Light is not bent by gravity, but it can be bent by passing though a gravity well that distorts time, and time distortion will bend light. So will a prism and a defraction grading. These two items bend light more or less by their wavelength. You often hear the argument that gravity bends light, but the theory says it is the time distortion caused by gravity. So gravity does _NOT_ directly act on a photon. There are theories that calculate a moving mass for photons as if gravity were directly operating on photons (F=MA), but the Special Theory of Relativity does not require or say that gravity acts directly on photons.
6) Photons are made when an electron decides to shed energy to become more stable. Offer an electron good company, and a bottle of beer, and they will sit down, kick their feet up, and settle into a lower energy state in a nano-second, and kick out the extra energy as a photon.
David