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Physics, Astronomy & Cosmology / erRe: If Red Light cures everything, why aren't hospital lightbulbs red?
« on: Today at 13:07:57 »
Ever look at a coloured object illuminated solely by a low pressure sodium lamp? Ok, it is not red but close to a monochromatic orange light, close enough. It is very hard to obtain any colour discrimination. Also I could believe in some small benefit from red illumination but I reckon it would be minimal.