Helmholtz
/ˈhelmhəʊlts/- Helmholtz, Hermann Ludwig Ferdinand von (1821-94), German physiologist and physicist. He formulated the principle of the conservation of energy in 1847. Other achievements include his studies in sense perception, hydrodynamics, and non-Euclidean geometry.亥姆霍兹, 赫尔曼·路德维希·费迪南德·冯（1821-1894, 德国生理学家和物理学家, 1847年提出能量守恒定律; 其他成就包括感性知觉、水动力学、非欧几何学方面的研究）。