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  • $\begingroup$ Maybe a duplicate, see physics.stackexchange.com/q/28448 $\endgroup$
    – basics
    Commented Aug 31, 2022 at 7:42
  • 2
    $\begingroup$ Actually objects do not reflect only certain wavelengths of light, but instead do reflect a mess of colours. See also this similar question about yellow color of bananas. $\endgroup$
    – Thomas Fritsch
    Commented Aug 31, 2022 at 12:06
  • $\begingroup$ relevant my answer here physics.stackexchange.com/q/605951 $\endgroup$
    – anna v
    Commented Aug 31, 2022 at 12:23
  • $\begingroup$ @ThomasFritsch there's no difference between "certain wavelengths" and "a mess of colors" unless you're getting picky about linewidths and the like. $\endgroup$
    – Carl Witthoft
    Commented Aug 31, 2022 at 14:12
  • $\begingroup$ @CarlWitthoft I meant to say, objects reflect a broad spectral range, not some narrow spectral lines. $\endgroup$
    – Thomas Fritsch
    Commented Aug 31, 2022 at 14:23