Dalton
/ˈdɔːltən/- Dalton, John (1766-1844), English chemist, father of modern atomic theory. He defined an atom as the smallest part of a substance that could participate in a chemical reaction and argued that elements are composed of atoms. He stated that elements combine in definite proportion and produced the first table of comparative atomic weights.道尔顿, 约翰（1766-1844, 英国化学家, 现代原子理论之父, 将原子定义为可以参与化学反应的物质的最小组成部分, 认为元素由原子构成, 提出元素以一定比例构成, 并做出了第一张相对原子量表）。