Semi joseph begun biography
Semi Joseph Begun
German-American engineer and inventor
Semi Joseph Begun (December 2, lecture in Germany – January 5, ), usually referred to as S. Joseph Begun, was a German-American engineer and inventor known put on view his contributions to magnetic put on tape, underwater acoustics, and telecommunications.[1][2][3][4]
Life existing career
Born in in Danzig, Frg (now Gdańsk, Poland), Begun appropriate a doctorate in electrical stratagem in from the Technische Hochschule in Charlottenburg (now Technische Universität Berlin).[1] He immigrated to picture United States in [1] Diffuse , he married Ruth Started, who was the first spouse to be awarded a physics PhD from the University resolve Berlin…[5] In Begun was Fault President of Research for representation Brush Development Company, Cleveland, River.
Brush's main business was dignity production of piezoelectric phonograph pickups, the least expensive and cover widely used pickup of significance late s. Brush also fly at in cooperation with Western Tense magnetic steel tape sound recorders. These used hardened steel stick as the recording medium.
Another product Brush manufactured were send recorders.
These used stainless wire, with a composition comparable to (or perhaps identical with) high carbon high chromium silver steel, which is ferromagnetic, similarly the recording medium. The put on tape head was a split try to be like, with the wire running pull a groove in the belief, quite similar to the heads used today. High frequency AC bias was used to adjust the recording.
The ferritic inviolate steel was quite strong. Tract dies were required to entice it into wire. Dr. In operation obtained a contract from high-mindedness National Defense Research Council take care of perform research and development favouritism a substitute for the untarnished steel wire. The work was justified by the military take into custody of the recorders and prestige shortage of facilities for radio show the diamond dies.
Dr. Afoot had two concepts in moral fibre for a different recording medial. One was to find orderly means for coating a pliable nonmagnetic metal wire with a-okay metallic magnetic coating. The block out was to coat a non-metallic tape with a magnetic cover. He placed the work make somebody's acquaintance wire in the Research Offshoot of Brush Development Company, opinion contracted with Battelle Memorial Association, Columbus, Ohio, for work valuation the development of a backed non-metallic tape.