Hermann von Helmholtz was a German physician, physicist, and philosopher. Some common synonyms for him include Helmholtz, Hermann Ludwig Ferdinand von Helmholtz, and Hermann von Helmholtz-Schmölz. He made significant contributions to the fields of physiology, optics, and electrodynamics, including the discovery of the law of conservation of energy. Helmholtz also helped establish the principle of the conservation of force and developed the theory of the vortex motion of fluids. He was a pioneer in the study of sensations, perception, and physiological acoustics. Today, he is remembered for his groundbreaking work in the fields of science and medicine.