“Over the past 20 years, I visited 193 museums in 42 different countries. Equipped with 1,500 Munsell colour chips – the world-standard samples for colour science – I examined 139,892 works of art, searching for violet. I concluded that there were indeed only a very few artworks before the 1860s that contained this colour from my childhood….
…I can’t help but wonder whether a muon shower might have enhanced our ability to see violet midway through the 19th century on Earth.”
And more here…