Heinrich Barkhausen

Heinrich Georg Barkhausen (2 December 1881 – 20 February 1956) was a German physicist who established an influential research laboratory in Dresden.

[2] He became the first professor of electrical engineering at the Technische Hochschule Dresden in 1911[1] at the age of 29, thus obtaining the world's first chair in this discipline.

[4] This effect is widely used in research, and physics education as a simple experiment to demonstrate the reality of magnetic domains.

In 1933 Barkhausen signed the Loyalty Oath of German Professors to Adolf Hitler and the National Socialist State.

The Institute of High-Frequency and Electron-Tube Technology at Dresden survived through much of World War II until it was bombed on 13 February 1945.