Nature, Količina 104Sir Norman Lockyer Macmillan Journals Limited, 1919 |
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Zadetki 1–3 od 37
Stran 239
... telegraphy , and telephony , in the last fifty years . is the theme on which the Editor of NATURE has asked me to make a short contribution to this jubilee issue . The chief difficulty , however , is in selecting from the enormous ...
... telegraphy , and telephony , in the last fifty years . is the theme on which the Editor of NATURE has asked me to make a short contribution to this jubilee issue . The chief difficulty , however , is in selecting from the enormous ...
Stran 241
... telegraphy has attracted the attention of electricians since 1842 , but no important inven- tion was made until Marconi in 1896 first showed how to employ electromagnetic waves for this purpose , generated by a special form of Hertzian ...
... telegraphy has attracted the attention of electricians since 1842 , but no important inven- tion was made until Marconi in 1896 first showed how to employ electromagnetic waves for this purpose , generated by a special form of Hertzian ...
Stran 487
... telegraphy as applied to aircraft , in which , after explaining the principles involved , he described the various improve- ments developed mainly by himself during the war . This will undoubtedly find an extensive application , not ...
... telegraphy as applied to aircraft , in which , after explaining the principles involved , he described the various improve- ments developed mainly by himself during the war . This will undoubtedly find an extensive application , not ...
Vsebina
Crabtree J H British Ferns and how to Identify | xvi |
Crawford H S The Mural Paintings and Inscriptions | xxxiii |
The Direct Determination Kew Observatory 120 The Magnetic Storm of August | xxxv |
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æther appears application appointed atomic weights birds body botany Bournemouth British Association Cambridge catalysis cent chemical chemistry chemists College colour comet Committee Council Department direction discovery economic edition Editor effect electric electrons elements energy engineering existence experiments fact fifty geological give given guanidin helium illustrated important increased industry Institute interest investigation J. J. Thomson James Watt journal jubilee knowledge laboratory large number lectures London Lord Rayleigh mathematical matter means meeting ment method mineral Museum National Physical Laboratory NATURE observations obtained October organisation paper period physical plants position possible practical present President problems production Prof progress published radiation radium recent recognised record regard Robert Hadfield Royal Society scientific workers South species technical telegony telegraphy temperature theory tical tion University W. H. Bragg wireless X-rays