I reckon most of us have had the thought at least once – if I’m looking at a “red” ball, why would I think the other person looking at the same object sees the colour the same way as me? After all, ...

A century after Erwin Schrödinger sketched out a bold vision for how we perceive color, scientists have finally filled in the missing pieces. A Los Alamos team used advanced geometry to show that hue, ...