If you shine a single light source on a screen you will see that the entire screen is lit up. assume this light source is of a single frequency (color). if you then turn on a second light source of this same frequency, and set it near the first, what will you see on the screen? (in practice, because visible light has such a short wavelength, the two light sources must be extremely close to each other.)
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If you shine a single light source on a screen you will see that the entire screen is lit up. assume...
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