A History of Wireless Telegraphy: Including Some Bare-wire Proposals for Subaqueous TelegraphsBlackwood, 1901 - 348 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 ...
... 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 ...
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 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 ...
Página 36
... shown me ) that when the poles of a battery are connected with any extended conducting medium , the electricity diffuses itself in radial lines between the poles . The first and larger portion will pass in a straight line , as offering ...
... shown me ) that when the poles of a battery are connected with any extended conducting medium , the electricity diffuses itself in radial lines between the poles . The first and larger portion will pass in a straight line , as offering ...
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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