I agree wholeheartedly. It goes from 'wavelength' to 'chromaticity and intensity' to 'three dimensional cartesian coordinates' without explanation. The 'color i

I agree wholeheartedly. It goes from 'wavelength' to 'chromaticity and intensity' to 'three dimensional cartesian coordinates' without explanation. The 'color in one paragraph' paragraph would be incomprehensible if you didn't already know all the missing steps, I felt. And the need for diagrams: amen.