Max Wien

Max Karl Werner Wien (; 25 December 1866 – 22 February 1938) was a German physicist.

Education and career Max Karl Werner Wien was born on 25 December 1866 in Königsberg (now Kaliningrad, Russia), then located in the Kingdom of Prussia, the son of the co-owner of the well-known Castell grain company, Otto Wien. He was a cousin of physicist and Nobel laureate Wilhelm Wien. In 1892, he worked under Wilhelm Röntgen at the University of Würzburg, where in 1893 he received his habilitation, qualifying him to be a professor. This transmitter, developed by Telefunken, produced very lightly damped waves, which had a narrower bandwidth and thus greater range, and also produced an easy to identify musical tone in the receiver headphones. Wien "singing spark" or quenched-spark transmitters ("Löschfunkensender") were widely used until the end of the spark era around 1920. He studied the conductance of electrolyte solutions at high fields and high frequencies, discovering what is now called Wien effect.

The Wien bridge oscillator is so named because it uses a Wien bridge as a feedback network, but it was not invented by Wien. William Hewlett, co-founder of Hewlett-Packard, was the first to use a Wien bridge as a feedback network around a vacuum tube amplifier to create an oscillator in 1939.