Submitted by Oheligud t3_yh9wwi in explainlikeimfive
[deleted] t1_iucudqw wrote
Reply to comment by heykody in ELI5: Why are the colours in rainbows in separate lines? by Oheligud
[deleted]
heykody t1_iud01i7 wrote
yeh, and 7 was a sacred number
IndigoFenix t1_iue0gns wrote
One possibility is that Newton's "indigo" was what we call blue, and his "blue" was what we call cyan.
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