Gustav Elmen

from Wikipedia, the free encyclopedia

Gustav Waldemar Elmen (born December 22, 1876 in Stockholm , † December 10, 1957 in Englewood (New Jersey) ) was a Swedish-American electrical engineer and metallurgist who developed Permalloy (similar to mu-metal ) around 1913 .

In 1893 he emigrated to the USA, where he acquired citizenship in 1918. 1904-06 he worked for General Electric, 1906-25 for Western Electric and 1925-41 for Bell Telephone Laboratories. He then founded and directed (1941–56) the magnet laboratory of the Naval Ordnance Laboratory near Washington DC

In 1914, after a long search, he had developed the mu-metal, the permeability of which he was able to increase in 1923 by heat treatment. Together with his colleagues Oliver Ellsworth Buckley and Harold D. Arnold from Bell Labs, around 1915 he proposed a method for constructing submarine cables in which the copper conductor is wrapped with permalloy. In 1923 the cable was tested in Bermuda and in September 1924 a cable was laid from New York to Horta in the Azores.

Willoughby Joseph Smith (son of Willoughby Smith ), Henry Frederick Garnett and Walter Randall developed mu-metal around 1923–33.

In 1927 he was awarded the John Scott Medal and in 1940 the Modern Pioneer Award.

Individual evidence

  1. ↑ http ://www. britica.com/EBchecked/topic/185202/Gustav-Waldemar-Elmen
  2. ↑ http://www.ieeeghn.org/wiki/index.php/Oliver_Buckley
  3. ↑ http://www.freepatentsonline.com/1910309.html
  4. ↑ Archive link ( Memento of the original from July 25, 2008 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot / www.nebpress.com
personal data
SURNAME Elmen, Gustav
ALTERNATIVE NAMES Elmen, Gustav Waldemar
BRIEF DESCRIPTION Swedish-American electrical engineer and metallurgist who developed Permalloy
DATE OF BIRTH December 22, 1876
PLACE OF BIRTH Stockholm
DATE OF DEATH December 10, 1957
Place of death Englewood, New Jersey