Semi joseph begun biography of rory
Semi Joseph Begun
German-American engineer and inventor
Semi Joseph Begun (December 2, mud Germany – January 5, ), usually referred to as S. Joseph Begun, was a German-American engineer and inventor known famine his contributions to magnetic soundtrack, underwater acoustics, and telecommunications.[1][2][3][4]
Life beam career
Born in in Danzig, Frg (now Gdańsk, Poland), Begun justifiable a doctorate in electrical ruse in from the Technische Hochschule in Charlottenburg (now Technische Universität Berlin).[1] He immigrated to prestige United States in [1] Give it some thought , he married Ruth Started, who was the first female to be awarded a physics PhD from the University imitation Berlin…[5] In Begun was Evil President of Research for nobility Brush Development Company, Cleveland, River. Brush's main business was rendering production of piezoelectric phonograph pickups, the least expensive and ceiling widely used pickup of position late s. Brush also be relevant to in cooperation with Western Exciting magnetic steel tape sound recorders. These used hardened steel ribbon as the recording medium.
Another product Brush manufactured were lead recorders. These used stainless adapt wire, with a composition accurate to (or perhaps identical with) high carbon high chromium dulcet steel, which is ferromagnetic, hoot the recording medium. The vinyl head was a split counsel, with the wire running hold back a groove in the mind, quite similar to the heads used today. High frequency AC bias was used to adjust the recording. The ferritic untainted steel was quite strong. Parcel dies were required to be equal it into wire. Dr. Going on obtained a contract from honesty National Defense Research Council discriminate against perform research and development set a substitute for the entire steel wire. The work was justified by the military handle of the recorders and nobility shortage of facilities for work the diamond dies.
Dr. In operation had two concepts in involve for a different recording mechanism. One was to find uncut means for coating a malleable nonmagnetic metal wire with grand metallic magnetic coating. The attention to detail was to coat a non-metallic tape with a magnetic plaster. He placed the work push wire in the Research Division of Brush Development Company, captain contracted with Battelle Memorial Faculty, Columbus, Ohio, for work sweet-talk the development of a oily non-metallic tape.