A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire Proposals for Subaqueous TelegraphsDodd, Mead & Company, 1900 - 325 páginas |
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Página 2
... shown in his Élec- tricité des Météores ' ( vol . i . p . 273 ) , one does not even want a cable to send across the sea a signal arranged beforehand . One could , for example , arrange at Mallorca an area of earth charged with ...
... shown in his Élec- tricité des Météores ' ( vol . i . p . 273 ) , one does not even want a cable to send across the sea a signal arranged beforehand . One could , for example , arrange at Mallorca an area of earth charged with ...
Página 16
... shown by the following notice which appeared in the ' Dundee Advertiser ' of April 11 , 1834 : - " J. B. Lindsay resumes classes for cultivating the intel- lectual and historical portions of knowledge and instruction on April 14 , 1834 ...
... shown by the following notice which appeared in the ' Dundee Advertiser ' of April 11 , 1834 : - " J. B. Lindsay resumes classes for cultivating the intel- lectual and historical portions of knowledge and instruction on April 14 , 1834 ...
Página 25
... shown . " As regards the power or primary agent , it may be either voltaic , galvanic , or magnetic electricity , and the apparatus for evolving the same , such as is used for ordi- nary telegraphic purposes . " As regards the ...
... shown . " As regards the power or primary agent , it may be either voltaic , galvanic , or magnetic electricity , and the apparatus for evolving the same , such as is used for ordi- nary telegraphic purposes . " As regards the ...
Página 26
... shown in the diagram . The absence of keys , no doubt , led a writer to say that Lindsay's method consisted " in providing strong enough batteries , one to send the current half the distance and the other to attract it the other half ...
... shown in the diagram . The absence of keys , no doubt , led a writer to say that Lindsay's method consisted " in providing strong enough batteries , one to send the current half the distance and the other to attract it the other half ...
Página 30
... shown that only a fractional part of the electricity generated goes across , and that the quantity that thus goes across can be increased in four ways : ( 1 ) by an increased battery power ; ( 2 ) by increasing the surface of the ...
... shown that only a fractional part of the electricity generated goes across , and that the quantity that thus goes across can be increased in four ways : ( 1 ) by an increased battery power ; ( 2 ) by increasing the surface of the ...
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: Including Some Bare-wire Proposals for ... John Joseph Fahie Visualização integral - 1901 |
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 charged Cheaper Edition circuit communication condensers conducting conductor connected copper wire Crown 8vo Daniell cell Demy 8vo detector diameter discharge distance disturbance Dundee earth effect Elec electric current electric waves electrical oscillations Electrician electro-magnetic employed ether ethereal waves exciter experiments Fcap feet filings Flat Holm galvanometer gutta-percha Hertz Illustrations inch increase induction coil Inst iron Leclanché cells length Leyden jar light lighthouse Lindsay magnetic Marconi means ments messages metallic method miles Morse Muckle Flugga needle obtained ohms ordinary paper parallel pass plates poles Portrait possible Post 8vo practical Preece produced Prof Professor receiving instrument reflector relay resistance river Scotland Second Edition secondary sensitive tube shore signals space sparks station surface tele telegraph telephone terminals tion transmitting trembler tricity University of Edinburgh vibrations vols Willoughby Smith wire wireless telegraphy yards
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