bn:00024223n
Noun Concept
Categories: Indian inventions, Receiver (radio), History of radio, Bangladeshi inventions, Radio electronics
EN
crystal set  crystal radio
Definitions
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EN
A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. Wikipedia
Simple radio receiver circuit used mostly for AM reception Wikidata
A crystal set. Wiktionary
An early radio receiver, having no electrical power supply except the radio waves themselves; it used a crystal of lead or cadmium sulphide and a wire (the cat's whisker) touching the crystal's surface. Wiktionary
An early kind of radio receiver. Wiktionary (translation)
WordNet 3.0 & Open English WordNet
Wikipedia
Wikidata
Wiktionary