ANSWERS: 1
  • 18 decillion !!! So how do we know there are 18 decillion colors? First of all, scientists have determined that in the lab we can see about 1,000 levels of dark-light and about 100 levels each of red-green and yellow-blue. So that’s about 10 million colors right there. And then you have to allow for other matters. Well, you don’t have to, but do you want to carry this through to the end or not? OK, now we see light in three ways — on surfaces, as light sources and in volumes. And 10 million different shades of light affect those 10 million colors. And so do 10 million surrounding colors. Plus, every individual sees colors differently. All of which involves a lot of brain-hurting math that adds up to 18 decillion, which if it isn’t quite infinity is pretty darn close.
    • Linda Joy
      https://www.azcentral.com/story/opinion/op-ed/claythompson/2015/12/14/how-many-colors-are-there/77311176/

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