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quote:Originally posted by unstmanWhat actually causes a ' light photon ', to travel at the speed of light???
quote:Originally posted by unstmanquote posted by : lightarrow - 'Light is an electromagnetic wave. Have you ever asked yourself: "why does sound travels (given material, pressure, temperature ecc.) at the speed of sound?" Or "why does water waves (I hope my english is good) travel at their speed?" 'I thought light was a wave and/or particle ? (I may have put this wrongly lol). I see your point regarding the travelling of a sound wave and this of a wave...both have the medium of matter to transfer one energy to another. However, in the vaccum of space, what medium is there for a photon to travel at such a high speed, and still sustain itself (in terms of energy (if it is a form of energy)), for such vast distances ??
quote:Originally posted by unstman... what medium is there for a photon to travel at such a high speed, and still sustain itself ... for such vast distances
quote:Originally posted by Soul SurferHowever because of the relatavistic equations this deflection is not seen as being a speed change (like the refraction of likght though a glass lens) but a slight distortion in the fabric of the universe.