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 xi
... containing much necessary information for which I could not conveni- ently find room in the body of the work . Appendix A deals with the philosophic views of the relation between electricity and light before and after Hertz , who , for ...
... containing much necessary information for which I could not conveni- ently find room in the body of the work . Appendix A deals with the philosophic views of the relation between electricity and light before and after Hertz , who , for ...
Página 7
... containing an electro- magnet . Davy always spoke of the relay as the " renewer ” " renewing wire " ; and by dip he meant to dip into mercury , or , we say nowadays , to close the circuit , as close a local circuit in which was included ...
... containing an electro- magnet . Davy always spoke of the relay as the " renewer ” " renewing wire " ; and by dip he meant to dip into mercury , or , we say nowadays , to close the circuit , as close a local circuit in which was included ...
Página 22
... contain a cubic foot , weighing 9000 ounces , of the value of about £ 36 sterling . Owing to the inequalities in the bottom of the ocean , the distance to America might be 3000 miles , and the expense £ 36,000 sterling — a trifle when ...
... contain a cubic foot , weighing 9000 ounces , of the value of about £ 36 sterling . Owing to the inequalities in the bottom of the ocean , the distance to America might be 3000 miles , and the expense £ 36,000 sterling — a trifle when ...
Página 35
... containing " the first really prac- tical suggestion in the direction of inductive telegraphy " ; but , as we now see , it is not the first suggestion , and it is certainly not inductive . the poles . The first and larger portion will ...
... containing " the first really prac- tical suggestion in the direction of inductive telegraphy " ; but , as we now see , it is not the first suggestion , and it is certainly not inductive . the poles . The first and larger portion will ...
Página 58
... contain the in- ventor's last word on the subject . A , Z ( fig . 4 ) are copper and zinc plates respectively , curved as ... containing a coil of insulated copper wire , No. 16 gauge , wound upon a wooden reel . The ends of the coil are ...
... contain the in- ventor's last word on the subject . A , Z ( fig . 4 ) are copper and zinc plates respectively , curved as ... containing a coil of insulated copper wire , No. 16 gauge , wound upon a wooden reel . The ends of the coil are ...
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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