Joseph Louis Gay-Lussac
Joseph Louis Gay-Lussac (6 December 1778 – 9 May 1850) was a French chemist and physicist. He is mostly known because he discovered that water is made up of two atoms of hydrogen and one atom oxygen with Alexander von Humboldt. He is also known for two laws related to gases with temperature and for his work on alcohol and water mixtures.
Joseph Louis Gay-Lussac Media
Gay-Lussac and Biot ascend in a hydrogen balloon, 1804. Illustration from the late 19th century.