A History of Wireless Telegraphy: Including Some Bare-wire Proposals for Subaqueous TelegraphsBlackwood, 1901 - 348 páginas |
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Página 5
... elec- tricity that the eye stands to light , nothing would prevent our telegraphing through the earth without conducting wires ; but it is not probable that we shall ever attain this end . " 1 Steinheil proposed another means of ...
... elec- tricity that the eye stands to light , nothing would prevent our telegraphing through the earth without conducting wires ; but it is not probable that we shall ever attain this end . " 1 Steinheil proposed another means of ...
Página 6
... Elec . Engs . , ' vol . ix . p . 404 ) . Indeed the photophone is as much the invention of Mr Brown as of Prof. Bell , who , however , has all the credit for it in popular estimation . EDWARD DAVY - 1838 . While arranging , in 1883 ...
... Elec . Engs . , ' vol . ix . p . 404 ) . Indeed the photophone is as much the invention of Mr Brown as of Prof. Bell , who , however , has all the credit for it in popular estimation . EDWARD DAVY - 1838 . While arranging , in 1883 ...
Página 8
... the idea in more recent years . His method is very clearly described in the ' Jour . Inst . Elec . Engs . , ' No. 137 , p . 908 . connecting medium . We take the following announcement from the 8 FIRST PERIOD THE POSSIBLE .
... the idea in more recent years . His method is very clearly described in the ' Jour . Inst . Elec . Engs . , ' No. 137 , p . 908 . connecting medium . We take the following announcement from the 8 FIRST PERIOD THE POSSIBLE .
Página 21
... elec- tricity . In order to prevent the action of water on the wire , a button of a more oxidable metal should be welded to it at short distances ; the best metal for this purpose would be lead . If soldered to the wire , it must be ...
... elec- tricity . In order to prevent the action of water on the wire , a button of a more oxidable metal should be welded to it at short distances ; the best metal for this purpose would be lead . If soldered to the wire , it must be ...
Página 35
... Elec . Engs . , ' vol . xxvii . p . 958 , as containing " the first really prac- tical suggestion in the direction of inductive telegraphy " ; but , as we now see , it is not the first suggestion , and it is certainly not inductive ...
... Elec . Engs . , ' vol . xxvii . p . 958 , as containing " the first really prac- tical suggestion in the direction of inductive telegraphy " ; but , as we now see , it is not the first suggestion , and it is certainly not inductive ...
Outras edições - Ver tudo
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Visualização integral - 1899 |
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Visualização integral - 1900 |
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Visualização integral - 1900 |
Palavras e frases frequentes
apparatus arrangement battery cable cells centimetres Cheap Edition circuit communication condenser conducting conductor connected copper wire Crown 8vo Daniell cell Demy 8vo detector diameter discharge distance disturbance Dundee earth effect Elec electric waves electrical oscillations Electrician electro-magnetic employed ether ethereal waves exciter experiments Fcap feet filings Flat Holm galvanometer gutta-percha Hertz Hertzian waves Illustrations inch increase induction coil iron Leclanché cells length Leyden jar light lighthouse Lindsay magnetic Marconi means ments messages metallic method metres microphone miles Morse Muckle Flugga needle obtained ohms ordinary paper parallel pass patent plates poles Portraits possible Post 8vo practical produced Prof Professor receiving instrument reflector relay resistance Scotland Second Edition secondary sending sensitive tube ship shore shown signals space spark-gap sparks station surface telegraph telephone terminals tion transmitting trembler tricity vertical wire vibrations Willoughby Smith wire wireless telegraphy yards
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