Fahrenheit, Gabriel Daniel (1686-1736), a German physicist. In 1714, he devised the Fahrenheit scale for measuring temperature and originated the use of mercury instead of alcohol in thermometers. He is also credited with discovering that a liquid's boiling point changes with the atmospheric pressure. Fahrenheit was born in Danzig (now Gdansk, Poland). He lived in Holland and England for many years, working as an instrument maker. Fahrenheit was elected to England's Royal Society in 1724.
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.
He built President Eisenhower an indoor golf-training machine, analyzed the Zapruder film and searched for an Egyptian pyramid's treasure chamber using cosmic rays. Aren't you dying to meet this wide-ranging scientist?