Thread: OT: Alien Contact
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Old February 26th, 2003, 11:01 PM
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Fyron Fyron is offline
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Default Re: OT: Alien Contact
Quote:
Originally posted by rdouglass:
quote:
Originally posted by Imperator Fyron:
What light has variable velocity?
I thought all light has variable velocity - it depends on the medium. That is the whole principle behind a prism IIRC....
No, light has constant velocity. Different wavelengths travel at marginally different speeds, but it is all constant. Light seeming to slow down in water and such is an optical illusion.
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