Hermann von Helmholtz (1821–1894)
Born 1821 CE, died 1894 CE.
Hermann Ludwig Ferdinand von Helmholtz (31 August 1821 – 8 September 1894; "von" since 1883) was a German physicist and physician who made significant contributions in several scientific fields, particularly hydrodynamic stability. The Helmholtz Association, the largest German association of research institutions, was named in his honour. Helmholtz is remembered for at the time groundbreaking work in natural science linking theory and practical research work. He was given the von in his surname by Emperor William II. In the fields of physiology and psychology, Helmholtz is known for his mathematics concerning the eye, theories of vision, ideas on the visual perception of space, colour vision research, the sensation of tone, perceptions of sound, and empiricism in the physiology of perception. In physics, he is known for his theories on the conservation of energy and on the electrical double layer, work in electrodynamics, chemical thermodynamics, and on a mechanical foundation of thermodynamics.
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