A History of Wireless Telegraphy: Including Some Bare-wire Proposals for Subaqueous TelegraphsBlackwood, 1901 - 348 sider |
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Side ix
... short period of four years , of the soundness of its scientific basis and of its practical utility is no slight achievement , and is all in the way of progress . Then , as a matter of fact , Mr Marconi's system , or some modification of ...
... short period of four years , of the soundness of its scientific basis and of its practical utility is no slight achievement , and is all in the way of progress . Then , as a matter of fact , Mr Marconi's system , or some modification of ...
Side 8
... short , any means of producing sharp concussions of the air , such as were known in his day . Let us suppose he used ... short dis- tances , but it is difficult to see how their vibrations could be utilised , at the distance of a mile ...
... short , any means of producing sharp concussions of the air , such as were known in his day . Let us suppose he used ... short dis- tances , but it is difficult to see how their vibrations could be utilised , at the distance of a mile ...
Side 9
... short space of one minute , an acknowledgment of the arrival of such question or message at the place intended , and a distinct answer to it in a few minutes . In principle this engine is altogether different from every kind of ...
... short space of one minute , an acknowledgment of the arrival of such question or message at the place intended , and a distinct answer to it in a few minutes . In principle this engine is altogether different from every kind of ...
Side 13
... short distance ; in which , how- ever , the principle was fully proved to be correct . It has been applied under the direction of my able assistants , Messrs Vail and Rogers , across the Susquehanna river , at Havre - de - Grace , with ...
... short distance ; in which , how- ever , the principle was fully proved to be correct . It has been applied under the direction of my able assistants , Messrs Vail and Rogers , across the Susquehanna river , at Havre - de - Grace , with ...
Side 16
... short time be lighted by electricity instead of gas , and heated by it instead of coal ; and machinery will be worked by it instead of steam - all at a trifling expense . " A miniature view of all these effects will be exhibited ...
... short time be lighted by electricity instead of gas , and heated by it instead of coal ; and machinery will be worked by it instead of steam - all at a trifling expense . " A miniature view of all these effects will be exhibited ...
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A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Uten tilgangsbegrensning - 1899 |
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Uten tilgangsbegrensning - 1900 |
A History of Wireless Telegraphy, 1838-1899: Including Some Bare-wire ... John Joseph Fahie Uten tilgangsbegrensning - 1900 |
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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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