[N0B0DY]

Fair enough, Dave, but too brief to know if you agree or not. I noticed you had referred to virtual particles in your matter in a void thread, and wanted to know what you thought about virtual particles playing a part ( rather large part) in the reduction of light speed.

You say that reference frames refer to rest/motion variability, and the vacume is considered by most scientists to be without motion so they infer that light speed measurement is constant regardless of the source frame, is that correct?

[PoPpAScience]

Originally Posted by N0B0DY

Fair enough, Dave, but too brief to know if you agree or not. I noticed you had referred to virtual particles in your matter in a void thread, and wanted to know what you thought about virtual particles playing a part ( rather large part) in the reduction of light speed.

You say that reference frames refer to rest/motion variability, and the vacume is considered by most scientists to be without motion so they infer that light speed measurement is constant regardless of the source frame, is that correct?

I was looking for the answer to Nobody's question to Dave.
I like to ask another question also.

Will photons travel at the speed of light out from a flash light, if the flash light is traveling at say, half the speed of light?

Is the speed of a photon, from a source, constant no matter what the speed of the source?

[neutralino]

Originally Posted by PoPpAScience

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Is the speed of a photon, from a source, constant no matter what the speed of the source?

Yes, if it is constant. That is the whole point of special relativity!