Glauber, Johann Rudolf (1604-1668), a German chemist. Glauber was the first to describe clearly the preparation of hydrochloric acid. He discovered sodium sulfate, which is commonly known today as Glauber's salt. Glauber found it had laxative properties and attributed to it remarkable healing powers. Glauber's salt is still sometimes used as a mild laxative, and also has industrial uses, chiefly in the manufacture of glass.
He is famous for a phrase he never said, for wearing turtlenecks and for hosting the original 'Cosmos' TV series. As enthusiastic about the stars as he was about marijuana, Carl Sagan led a very surprising life. Here are 10 cool facts.
The man immortalized on the left was behind the three laws of motion and the universal law of gravitation. He was also competitive, temperamental and fascinated with alchemy. How well do you know Newton?