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Early influences and education; A.B. from Willamette University in physics and math, 1926; fellowship and M.A. from Stanford University; graduate study at Columbia University on x-rays. Work at Bell Laboratories, starting 1929, on vacuum tube amplifiers with John B. Johnson; carbon microphones, semiconductors and the solar battery; work atmosphere and supervisors, Peter J. W. Debye; technical colloquia. History of “thermistors” and transistors. First color TV demonstration. Work during World War II on bombing using radar techniques and infrared.