This video explains how 19th century French physicist Jules Antoine Lissajous used tuning forks to map out two-dimensional ...

View of the three-dimensional map on the cave floor. Credit: Pascal Crapet, Fontainebleau / courtesy of Médard Thiry for labrujulaverde.com French scientists have identified a unique engraving in the ...

This is a new method to visualize a three-dimensional color gamut, including lightness, in a two-dimensional diagram, which could not be expressed by a conventional chromaticity diagram.