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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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Color temperature
To grow plants with artificial light, I need a device that can measure the wavelength of light and make sure I get the desired wavelength to the plant. This device is very expensive. Can I use the col …