On rainbows. Part 4. on September 27, 2018 dispersion experimentum crucis Newton prismatic experiments rainbow ROYGBV Snell's law subjective prismatic observations VBGYOR +
Collaboration Day 8 on March 01, 2017 Descartes diffraction experimentum crucis longitudinal propagation longitudinal spectral distribution objective prismatic experiments Snell's law subjective prismatic experiment +
From VBGYOR to ROYGBV to VBGYOR/ROYGBV, and then to their implicative extensions Part 1. on April 10, 2016 experimentum crucis Goethe contra Newton Newton spectral colours VBGYOR white wall +
Some of my confrontations from 2008-2010 on March 22, 2016 experimentum crucis refraction ROYGBV VBGYOR +
My analysis of Newton's theory of light and colours on March 14, 2016 blue experimentum crucis Goethe law of colour-display Newton Opticks prism red spectra subjective prismatic experiment +
Newton’s theory of light and colours on February 27, 2016 experimentum crucis Huygens Lucas Newton Opticks prism Robert Hooke +