Clausius
/ˈklaʊzɪəs/- Clausius, Rudolf (1822- 88), German physicist, one of the founders of modern thermodynamics. He was the first, in 1850, to formulate the second law of thermodynamics, developing the concept of a system's available thermal energy and coining the term entropy for it.克劳修斯, 鲁道夫（1822-1888, 德国物理学家, 现代热力学奠基人之一; 他第一个系统地阐述了热力学第二定律[1850], 提出“体系可利用的热能”这一概念, 并为此创造了“熵”这一术语）。