True Genius

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‘On Tuesday afternoon, December 16,1947, in one of their first trials, at 1,000 cycles per second, they achieved a power gain of 1.3 and a voltage gain of 15,’ Hoddesdon and Daitch in their biography of John Bardeen, ‘True Genius’. The account continues: “I had an amplifier with the order of magnitude of 100 amplification clear …

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