Hans Gerdien

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Hans Gerdien (born May 13, 1877 in Königsberg i. Pr. , † February 1, 1951 in Bremke ) was a German physicist.

Life

Gerdien studied physics, mathematics and chemistry at the Ludwig Maximilians University in Munich and the Georg August University in Göttingen . With a doctoral thesis with Emil Wiechert at the Geophysical Institute in Göttingen, he was awarded a Dr. phil. PhD. He was Wiechert's assistant, dealt with air electricity, was the founder of the Lower Saxony Association for Airship Travel and an active balloonist. From 1906 he was in Göttingen with Eduard Riecke at the Institute for Experimental Physics and from 1908 at Siemens AG in Berlin, where he stayed for the rest of his career until his retirement in 1944. He founded the research laboratory of Siemens and Halske and Siemens-Schuckertwerke in 1912 and then headed it. In 1916 he received the title of professor in Göttingen. He expanded the Siemens research laboratory into a leading industrial research laboratory with over 200 employees at times.

Hans Gerdien dealt with thermal expansion measurements and electrolysis at high current density. In 1910 he patented an amplifier tube and developed an acoustic transducer named after him, a very bright light source, the "Gerdienscher Lichtbogen", a cathode ray furnace, a resonance relay, refractory materials made of highly sintered aluminum oxide, the "sintered corundum spark plug". He recognized the importance of magnetostriction in generating ultrasound in liquids.

Honors

literature

Individual evidence

  1. ↑ Dissertation: About the influence of torsion on the magnetic moment of circularly magnetized nickel and iron wires .
personal data
SURNAME Gerdien, Hans
ALTERNATIVE NAMES Gerdien, Johannes
BRIEF DESCRIPTION German physicist
DATE OF BIRTH May 13, 1877
PLACE OF BIRTH Koenigsberg i. Pr.
DATE OF DEATH February 1, 1951
Place of death Bremke