Helmholtz, Hermann von
German physiologist and physicist (1821-1894)
Born on 31 August 1821 in Potsdam, Germany, Hermann von Helmholtz taught anatomy
and physiology in Bonn in 1858, and became
professor of physics in Berlin
He made important contributions in the fields of mathematical physics and acoustics. In 1842, he published an important article on the first law of thermodynamics, and in 1863 a book on music and the perception of sound. In this standard work he introduced the concept of resonators that are now known as Helmholtz resonators. These resonators were used to filter purer tones out of sound signals, and thus to conduct Fourier analysis.