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单词 electromotograph
释义

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electromotograph
electromotograph n.
Brit. /ᵻˌlɛktrə(ʊ)ˈməʊtəɡrɑːf/
,
/ᵻˌlɛktrə(ʊ)ˈməʊtəɡraf/
,
U.S. /əˌlɛktroʊˈmoʊdəˌɡræf/
,
/iˌlɛktroʊˈmoʊdəˌɡræf/
now historical a device invented by Thomas Edison for producing movement of a lever (in a telegraph) or a diaphragm (in a telephone) by utilizing the variation in friction between two conductors in relative motion when the current between them varies; = motograph n.
ΚΠ
1875 T. Edison in J. T. Sprague Electr. 361 I then passed the strip into the electromotograph.
1910 F. L. Dyer & T. C. Martin Edison II. 837 Another notable use of the electromotograph principle was in its adaptation to the receiver in Edison's loud-speaking telephone.
1995 Sci. Amer. Oct. 140 At the invitation of his friend George Frederick Barker.., Edison had demonstrated an earlier version of the electromotograph at a meeting of the National Academy of Sciences.
extracted from electro-comb. form
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更新时间:2024/12/23 8:11:41