Roy G. Biv
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Roy G. Biv is a popular mnemonic device used for memorizing the traditional optical spectrum.
In Great Britain schoolchildren are taught the mnemonic Richard Of York Gave Battle In Vain. Another popular mnemonic is Ring Out Your Great Bells In Victory.
The inclusion of the color indigo is attributed to Isaac Newton, who wanted the number of colors in his spectrum to come out to seven.
"Roygbiv" is the name of a song by Boards of Canada on their album Music Has The Right To Children.
ROYGBIV is also a color space, albeit one with more than three components.
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