单词 | space telegraphy |
释义 | > as lemmasspace telegraphy space telegraphy n. now historical = radio-telegraphy n. 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 1897 Proc. Physical Soc. 16 58 Discrimination by syntony is possible with magnetic systems of space telegraphy. 1902 G. Marconi in Proc. Royal Soc. 71 344 Some long-distance space telegraphy tests [were] carried out towards the end of February last. 1983 Isis 74 349 Preece was apparently under the impression that Hertz's work was related to his own interest in methods of space telegraphy by induced currents. < as lemmas |
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