Joseph-Louis Gay-Lussac (1778-1850)
French physicist and chemist, Gay-Lussac was born in Saint Leonard de Noblat, Marche, in December 6th 1778 and died in Paris, in May 9th 1850.
Studied in the Polytechnic School of Paris where later became Chemistry Professor. It was also Physics Professor in the Sorbonne. Along with Louis-Jacques Thénard, followed the work of Davy being responsible for the discovery of boron and iodine. In 1804, working at the Institute of France, performed two balloon ascensions with the purpose of studying the chemistry and physics of the outer layers of the atmosphere. His most important research refer to the gas expansion, with special relevance to the well known Gay-Lussac law.