Subject
William Shockley > inversion layer
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And nobody could explain why this over-amplification was happening until William Shockley theorized in 1950 that the heating pulses formed what is called an "inversion layer" at the point of the collector.

“And nobody could explain why this over-amplification was happening until William Shockley theorized in 1950 that the heating pulses formed what is called an "inversion layer" at the point of the collector.”