🎄🔬🎨 Puzzle #AdventCalendar #ScienceArtTechAdvent—day 2

Yesterday’s riddle was about dyer’s woad (Isatis tinctoria), the yellow-flowering dye plant whose indican once gave us indigo; today I’m asking which pioneer of lipid chemistry helped shape color theory by focusing on a particularly striking color phenomenon.

🎄🔬🎨 Puzzle #AdventCalendar #ScienceArtTechAdvent—day 1

How was brilliant blue produced in the Middle Ages from fermented #indigo plants—and what colour did the flower of this dye plant have?

🎄🔬🎨 New puzzle #AdventCalendar #ScienceArtTechAdvent—Intro

Starting tomorrow, a new daily German language puzzle with English subtitles about science, technology, and art will drop here every day. Post your answer in the comments and pick up some fascinating facts along the way!