| 单词 | spark telegraphy |
| 释义 | > as lemmasspark telegraphy spark telegraphy n. an early method of radio-telegraphy in which high-frequency oscillations are set up in a transmitting aerial by the discharge of a highly charged capacitor through a spark gap in series with an inductance connected to the aerial. ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telegraphy > [noun] > types or systems of > radio-telegraphy space telegraphy1897 wireless telegraphy1897 radio-telegraphy1898 spark telegraphy1898 wireless1899 marconigraphy1902 Marconism1903 radiography1904 W/T1914 spark1921 1898 Ludgate VII. 78/1 Mr. Marconi, in July, 1897, came to England to introduce his new plan of ‘Spark Telegraphy’. 1908 Rep. Brit. Assoc. Advancem. Sci. 1907 730 A movement which much more nearly corresponds with the actual current in the vertical wire as used in spark telegraphy. < as lemmas |
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