A History of Wireless Telegraphy: Including Some Bare-wire Proposals for Subaqueous TelegraphsBlackwood, 1901 - 348 páginas |
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Página 2
... observation , might easily have resulted in the suggestion at this early date of signalling through and by water alone . Dr Hamel 2 tells us that Sömmerring , on the 5th of June 1811 , and at the suggestion of his friend , Baron ...
... observation , might easily have resulted in the suggestion at this early date of signalling through and by water alone . Dr Hamel 2 tells us that Sömmerring , on the 5th of June 1811 , and at the suggestion of his friend , Baron ...
Página 34
... observations led me to question the accepted theory that currents of electricity , discharged into the earth at each end of a line of telegraph , sped in a direct course - instinctively , so to say - through the intervening mass of ...
... observations led me to question the accepted theory that currents of electricity , discharged into the earth at each end of a line of telegraph , sped in a direct course - instinctively , so to say - through the intervening mass of ...
Página 75
... observed.2 Thus , in August 1877 , Mr Charles Rathbone of Albany , N.Y. , had been ex- perimenting with a Bell ... observations in India in 1873. As far back as 1868 Prof. Hughes , at the request of the French Telegraph Administration ...
... observed.2 Thus , in August 1877 , Mr Charles Rathbone of Albany , N.Y. , had been ex- perimenting with a Bell ... observations in India in 1873. As far back as 1868 Prof. Hughes , at the request of the French Telegraph Administration ...
Página 76
... observe the effects . A wire running from Albany to Troy alongside the Edison wire was earthed with a Bell telephone ... observations were made on six separate occasions between August 28 and September 11 , and , strangely enough , two ...
... observe the effects . A wire running from Albany to Troy alongside the Edison wire was earthed with a Bell telephone ... observations were made on six separate occasions between August 28 and September 11 , and , strangely enough , two ...
Página 83
... Academy of Arts and Sciences in 1880. See also ' Silliman's American Journal of Science , ' August 1880 , which I follow in the text . time - signals observed on the telephone lines were not PROFESSOR JOHN TROWBRIDGE . 83.
... Academy of Arts and Sciences in 1880. See also ' Silliman's American Journal of Science , ' August 1880 , which I follow in the text . time - signals observed on the telephone lines were not PROFESSOR JOHN TROWBRIDGE . 83.
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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