Have scientists tried their best to calculate speed of light in vacuum? It seems very absurd to me that light of all frequencies have same velocity in space. Can someone find in future if this speed in reality differ to even some small amount?
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Possible duplicates: http://physics.stackexchange.com/q/2230/2451 and links therein. – Qmechanic Jan 21 '16 at 10:36
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4Please avoid asking questions based purely on your internal feelings about physics. – Carl Witthoft Jan 21 '16 at 14:03
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2I've voted to reopen this. IMHO it's a legitimate question, and it should not be closed on non-mainstream grounds. – John Duffield Jan 24 '16 at 13:19
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1@CarlWitthoft how will you develop doubts without internal intuitions? – N.S.JOHN Feb 01 '16 at 14:21
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@N.S.JOHN If you wish to work with internal intuitions, you had better get out of science and engineering entirely. You will not succeed. – Carl Witthoft Feb 01 '16 at 15:00
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What you describe is the phenomenon called optical dispersion. For example in most optical media the refractive index and therefore the velocity of light depend on frequency. The question is whether empty space shows the same effect.
This has been studied as part of attempts to detect any granularity in spacetime due to quantum gravity effects - short wavelengths should be affected more then long wavelengths by any underlying granularity. Light emitted by distant quasars or gamma ray bursters is inspected for any signs of dispersion, but so far none has been detected.
So experiment finds that the speed of light in vacuum is independent of frequency.
John Rennie
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Your link suggests for now we may except constancy of speed of light for different frequencies. – Anubhav Goel Feb 01 '16 at 14:31