Talk:Karl Ferdinand Braun

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Take Ferdinand Braun, for example, the man who discovered rectification in crystals. Later he received the Nobel Prize along with Marconi. He had three great discoveries. One was crystal rectification, which is the seat of the useful properties of semiconductors. He invented the electron tube that today is the basis for that employed in television sets. And then he's the one who, after Marconi got stuck and couldn't transmit more than fifteen kilometers, noted that the circuitry Marconi was using was wrong. [1]