How many colors are there in the spectrum?

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IN ADDITION:

Remember the name ROY G. BIV. Red, orange, yellow, green, blue, indigo and violet.

Hooweestik.

Actually the rigorous answer would be 'all of them'. If you have a light source that produces all frequencies of light then a true spetrum would separte all of them out. The number of different frequencies of light is determined by plank's constant which is painfully small so there are an incredible number of possible frequencies of light.

First answer by Cjdels. Last edit by Wolfgang schwartzschild. Contributor trust: 68 [recommend contributor]. Question popularity: 26 [recommend question]

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