Newton and the Imaginary Colour

March 30, 2010 — Leave a comment

I was thinking about colours today – specifically which colours correspond to which wavelengths. The results are a bit weird:

  • Red: 750 – 620 nm
  • Orange: 620 – 590 nm
  • Yellow: 590 – 570 nm
  • Green: 570  -495 nm
  • Blue: 495 – 450 nm
  • Violet: 450  -380 nm

Here I’ve used the figures given by Wikipedia (sourced from catchily titled the

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