Originally Posted by
supertrogdor
This has been mentioned several times in the past, and you are more than welcome to try it to test the theory, but as i understand it blue light carries no red within it, so filtering it just cancels out the light. Same for red filtered by blue. White light carries all light frequencies and therefore filtering it red, blue, purple whatever only allows those frequencies to pass through. It does therefore dim you white light, but only because it is keeping the other colors from passing through the filter. Again, feel free to try it yourself, but that is what has been mentioned previously
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