Communications: The crystal detector: By 1920, G.W. Pickard had tested 31 250 possible combinations of materials in search of a practical detector

@article{Douglas1981CommunicationsTC,
  title={Communications: The crystal detector: By 1920, G.W. Pickard had tested 31 250 possible combinations of materials in search of a practical detector},
  author={A. Douglas},
  journal={IEEE Spectrum},
  year={1981},
  volume={18},
  pages={64-69}
}
We use the term electronics today; in 1906. the term was ¿radio.¿ Radio was a new field, and most of the technology had to be developed from scratch. For reliable long-distance communication, sensitive receivers were vitally needed. The heart of the receiver was its detector, the device that demodulated the radio frequency signal and produced an audio frequency current in the headphones that listeners had to wear. Making this detector more sensitive became the goal of every radio engineer. The… Expand
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