crystal set

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

(electronics) 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.

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As a teenager, she built a simple crystal set to listen to distant broadcasts without batteries.

詳細

意味（1）

(electronics) 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.

crystal sets （ 複数形 ）