pigments
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How Colours Are Discovered
In the early 18th century, German chemist Johann Jacob Diesbach was at work in a laboratory trying to make a red pigment out of cochineal insects, the tiny bugs whose extract dyes everything from food to lipstick. Diesbach hypothesised that he could combine the carmine extract with alum, iron sulfate and potash to make the…
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Scientists Discover The Key To Making Paint That Never Fades
It seems like scientists are all about immortality these days. It’s not just plants and people that are getting the treatment, though. A team of Harvard engineers are developing a way of producing colour that could produce paint that never fades, and displays that never go dark.