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 +
Goethe's theory of colours on March 13, 2016 camera obscura Goethe contra Newton ray of light white wall +