Johann Heinrich Jakob Müller (30 April 1809, Kassel, Kingdom of Westphalia – 3 October 1875, Freiburg im Breisgau) was a German physicist.
In 1844 he was appointed professor of physics and technology at the University of Freiburg, a position he maintained up until his death in 1875.
[1] He conducted research on optics, galvanism and magnetism, as well as studies of light and heat radiation.
[1] His principal work, "Lehrbuch der Physik und Meteorologie" (2 volumes, Braunschweig, 1842; 7th edition, 1868–69), was originally a version of Claude Pouillet's "Éléments de physique expérimentale et de météorologie";[2] and he published a supplement to it, "Lehrbuch der kosmischen Physik" (1856; 3rd edition, 1872).
[3] Later on, Leopold Pfaundler published an enlarged 9th edition, titled "Müller-Pouillet's Lehrbuch der physik und meteorologie" (1886–98, 3 volumes).