Why are rubies red and emeralds green? Their colors come from the same metal in their atomic structure
The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...
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Catch a Rainbow
When this happens, light becomes separated into a rainbow of colors—red, orange, yellow, green, blue, indigo (blue-violet), and violet. In this activity, you can make your own rainbow.
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What is colour?
You can use a prism to split (or disperse) white light into a spectrum of colours: red, orange, yellow, green, blue, indigo and violet. Dispersed means that the colours are separated out.
Where does black fall on the color spectrum?
Discover where black falls on the color spectrum and how human perception of colors is subjective and context-dependent in this insightful article.