doooo
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Metals are colored because the absorption and re-emission of light are dependent on wavelength. Gold and copper have low reflectivity at short wavelengths, and yellow and red are prefeentially reflected.
Here, when all frequencies of visible light focus on a gold, short wavelengths light does not re-emission. Then, the short wavelengths are absorbed as heat inside gold???
Here, when all frequencies of visible light focus on a gold, short wavelengths light does not re-emission. Then, the short wavelengths are absorbed as heat inside gold???