English John William Reynolds Cited by user AntientNestor on 09 Feb 2024 John Williams Reynolds (1817–28 July 1874) was an English cavalry officer and organic chemist.
English Propylene Cited by user 5.178.188.143 on 30 Dec 2023 Propylene, also known as propene, is an unsaturated organic compound with the chemical formula CH3CH\dCH2.
French 1836 en science Cited by user Mandeville on 14 Nov 2022 * 25 février : l'inventeur américain Samuel Colt obtient un brevet américain pour le Colt Paterson, son premier révolver.