Heinrich (Friedrich Emil) Lenz

Physicist, born in Tartu (formerly Dorpat), E Estonia. He first studied theology, then chemistry and physics at Dorpat. He became professor of physics at St Petersburg Academy of Science (1836), and later, dean of mathematics and physics. He was the first to state the law governing induced current (Lenz's law), and is also credited with discovering the dependence of electrical resistance on temperature (Joule's law).

Heinrich Friedrich Emil Lenz (February 12, 1804 - February 10, 1865) was a Baltic German physicist most famous for formulating Lenz's law in 1833.

Lenz was born in Tartu in what is today Estonia.

After completing his secondary education in 1820, Lenz studied chemistry and physics at the University of Tartu.

After the voyage, Lenz began working at the University of St. Petersburg, where he later served as Dean of Mathematics and Physics from 1840 to 1863 (Russian: Эмилий Христианович Ленц). Besides the law named in his honor, Lenz also independently discovered Joule's law in 1842;