“It has no justification in experiment exactly; it just represents something that he’s imposing upon the color spectrum by analogy with music.” Of his rainbow experiment Newton wrote that he had ...

An exotic colour at the far end of our visible spectrum and often associated with royalty, purple is relatively rare in nature. But some vibrant plants, animals and fungi do show off a regal purple, ...

It takes all the colors of the rainbow for us to see it that way ... and tiny gas molecules in our atmosphere, however blue and violet are scattered the most. That's because blue and violet ...