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Results tagged with visible-light
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user 20826
Questions related to the perception and measurement of light (primarily in the visible range), its mathematical description, the reproduction of colors by different means, color combinations, etc. Please use the tag [electromagnetic-radiation] if you want to refer to the general form of light.
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What is the time component of velocity of a light ray?
If we have a light ray $x^\mu$ with velocity $c$, what is $c^0$ (the time component)?
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