Word: audion
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Dates: during 1920-1929
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...older men, led some of the amateurs to embark in the business of making and selling wireless apparatus. The ordinary things were all homemade. In fact, it was impossible to buy some transmitting apparatus at all. Mr. Lee DeForest then brought out what he was pleased to term the "Audion" detector. It was a little incandescent lamp, with one or two fixings on it, and it was intended to take the place of the crystal of galena ore, or the bit of silicon. But it was found to be thousands of times more sensitive than the bit of galena...