FACTOID # 119: The United States has the world's highest number of McDonald’s restaurants per capita. Americans also die of obesity more often than any other nation, with more deaths than Mexico, Germany, Spain, Austria and Canada combined.
 
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Encyclopedia > Walter Schottky

Walter H. Schottky (July 23, 1886, Zürich, Switzerland - March 4, 1976, Pretzfeld, West Germany) was a German physicist who invented the screen-grid vacuum tube in 1915 and the tetrode in 1919 while working at Siemens. In 1938, Schottky formulated a theory predicting the Schottky effect, now used in Schottky diodes.


External links

  • Biography of Walter H. Schottky (http://www.geocities.com/bioelectrochemistry/schottky.htm)

 

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