Oskar Heil

Oskar Ernst Heil ( born 20 March 1908 in Langwieden; † 15 May 1994 San Mateo ) was a German physicist.

Life

He studied physics, chemistry, mathematics and music, and his doctorate in 1933 at the Georg -August- University of Göttingen with a thesis on molecular spectroscopy.

He learned Agnessa Arsenjewa (1901-1991) know who had worked under Professor Dmitri Roschanski ( 1882-1936 ). In 1934, she married in Leningrad.

The couple traveled to the UK and worked with Ernest Rutherford at the Cavendish Laboratory in Cambridge. On 2 March 1934, he announced the patent "Improvements in, or relating to electrical amplifiers and other control arrangements and devices " (British Pat. 439457 ) to, in which he proposed capacitively acting control electrodes of semiconductors. He was instrumental in the development of the field effect transistor.

On a trip to Italy, the couple wrote in Bormio the article "On a new method for generating short undamped electromagnetic waves of high intensity ." They described this as a new principle for generating vibrations, in which the vibrational energy is coupled out of an electron beam without the electrodes are made by oscillating electrons. According to their calculation, up to 35 % of the electron beam energy can be transformed into vibrational energy. It was published in 1935 in the Journal of Physics. In Germany and the United States found that work, which describes the basic principle of the klystron, the time received little attention.

Apparently he accompanied Agnessa, as these back to the Leningrad Physico- Technical Institute ( FISTECH ) went. Your local researches were unsuccessful. Agnessa Probably was forbidden to leave the Soviet Union and healing returned alone to England, where among other things he worked on the development of microwave tubes until shortly before the outbreak of World War II at Standard Telephone and Cables. After his return to Germany he worked in the laboratory of the transmitting tube C. Lorenz AG in Berlin Tempelhof on the development of later named after him microwave generator. In 1947 he was invited to the United States. According to scientific research and in industry, he founded in 1963 in Belmont (California ) his own company healing Scientific Labs Inc.

From his studies of the fundamental characteristics of the human ear, and not the abstract theory of how a speaker should work, he developed the basic principle of the Air Motion Transformer, which he had patented in 1969. As a "Heil AMT " tweeter has been marketed since the early 1970s by the U.S. Lautprecherfirma ESS in hi-fi speakers of his invention. Based on this principle for some years made ​​by German speakers Companies speakers ( ARES JET, ETON ET4, Elac, Burmester, foresters audio technology, sound master Ecouton, Adam Audio, Audio Eve ).

Works

  • O. Heil, S. Vogel: Pulse heating of materials by highly Concentrated electron beams. Defense Technical Information Center, 1962, OCLC 227,278,342th
  • O. Heil: Tetrahedron Flow Beam Geometry for Microwave Tubes. Defense Technical Information Center, 1969, OCLC 227,640,471th
  • O. Heil: Metallizing and Evaluation of Boron Nitride Microwave Windows. Defense Technical Information Center, 1969, OCLC 227,655,057th
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