单词 | electromotograph |
释义 | > as lemmaselectromotograph 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. < as lemmas |
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