A History of Wireless Telegraphy: Including Some Bare-wire Proposals for Subaqueous TelegraphsBlackwood, 1901 - 348 páginas |
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Página 2
... spark the desired signal . " 1 Another early telegraph inventor and eminent physi- ologist , Sömmerring of Munich , has an experiment which , under more favourable conditions of observation , might easily have resulted in the suggestion ...
... spark the desired signal . " 1 Another early telegraph inventor and eminent physi- ologist , Sömmerring of Munich , has an experiment which , under more favourable conditions of observation , might easily have resulted in the suggestion ...
Página 98
... spark - gap , which even is not absolutely necessary for the production of waves , leaving the secondary coil " open " alone sufficing.1 Prof. Dolbear's account of the action of his apparatus is in places a little puzzling , which ...
... spark - gap , which even is not absolutely necessary for the production of waves , leaving the secondary coil " open " alone sufficing.1 Prof. Dolbear's account of the action of his apparatus is in places a little puzzling , which ...
Página 179
... Spark Discharges shown by Photography . " For a concise exposition of the theory of electrical oscillations , see Prof. Edser's paper , ' Electrical Engineer , ' June 3 , 1898 , and following numbers . 2 ' Electric Waves , ' London ...
... Spark Discharges shown by Photography . " For a concise exposition of the theory of electrical oscillations , see Prof. Edser's paper , ' Electrical Engineer , ' June 3 , 1898 , and following numbers . 2 ' Electric Waves , ' London ...
Página 180
... spark - gap was made in the circuit of the first spiral . Thus was made the all - important discovery of the " effective spark - gap " which started Hertz on the road of his marvellous investigations . A very little consideration of ...
... spark - gap was made in the circuit of the first spiral . Thus was made the all - important discovery of the " effective spark - gap " which started Hertz on the road of his marvellous investigations . A very little consideration of ...
Página 181
... sparks passed . The exciter was charged by an ordinary Ruhmkorff induction coil of small size . Fig . 31 . When The ... sparks pass across the gap , the greater length of these sparks in- dicates the greater intensity of the received ...
... sparks passed . The exciter was charged by an ordinary Ruhmkorff induction coil of small size . Fig . 31 . When The ... sparks pass across the gap , the greater length of these sparks in- dicates the greater intensity of the received ...
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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