Ludvig Lorenz

Ludvig Valentin Lorenz ( ; 18 January 1829 – 9 June 1891) was a Danish physicist and mathematician. In 1867, he gave completely general integral solutions to the differential equations of electromagnetism, which contain retardation effects reflecting the finite speed of light. This paper also introduces the Lorenz gauge, named after him.

Lorenz also developed mathematical formulae to describe phenomena such as the relation between the refraction of light and the density of a pure transparent substance, and the relation between a metal's electrical and thermal conductivity and temperature (Wiedemann–Franz–Lorenz law).

His name is sometimes confused with that of the physicist Hendrik Antoon Lorentz, who is incorrectly credited for Lorenz's work. Provided by Wikipedia