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Feb22-12, 07:07 PM
P: 151
Quote Quote by davenn View Post that the red end of the spectrum is passed and the rest of the spectrum is filtered out

If I apply a red filter, are Infrared, Microwave and Radio passed? and are Gramma ray, X-ray, Ultraviolet, Visible filtered out?

Does anyone have any suggestions?

Thanks everyone very much for any suggestions