Henry Cavendish

Henry Cavendish (1731–1810) was a British scientist, chemist, and physicist known for his work in the fields of gas chemistry and electricity. He is best remembered for discovering hydrogen, which he called "inflammable air," and for measuring the density of the Earth in his famous experiment, known as the Cavendish experiment. This experiment allowed for the first accurate determination of the gravitational constant and the mass of the Earth.