The History and Progress of the Electric Telegraph: With Descriptions of Some of the ApparatusD. Van Nostrand, 1869 - 280 páginas |
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Página x
... Morse's Telegraph 42. Modifications of Morse's Telegraph . 43. Davy's Telegraph 44. Wheatstone's Dial Telegraph 43 • 46 47 47 48 · 48 49 51 45 . 99 99 " " improved 52 • 46 . 99 99 " 9 with Magneto - electricity 52 § 47. Classification V ...
... Morse's Telegraph 42. Modifications of Morse's Telegraph . 43. Davy's Telegraph 44. Wheatstone's Dial Telegraph 43 • 46 47 47 48 · 48 49 51 45 . 99 99 " " improved 52 • 46 . 99 99 " 9 with Magneto - electricity 52 § 47. Classification V ...
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... Morse Transmitting Plate 77 65. Relays . 66. American , or Simple Relays 79 79 67. Polarised , or Induction Relays 80 68. Morse Recorders 69. Embossing Instrument with movable Magnet 70. Direct - working Recorders 83 84 86 71 . " " 99 ...
... Morse Transmitting Plate 77 65. Relays . 66. American , or Simple Relays 79 79 67. Polarised , or Induction Relays 80 68. Morse Recorders 69. Embossing Instrument with movable Magnet 70. Direct - working Recorders 83 84 86 71 . " " 99 ...
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... Morse or with a Dr. Jackson , who was a fellow - passenger on board . The legal as well as the popular verdict has , however , been given in favour of Mr. Morse , who for a long period has enjoyed his patent rights in the invention of ...
... Morse or with a Dr. Jackson , who was a fellow - passenger on board . The legal as well as the popular verdict has , however , been given in favour of Mr. Morse , who for a long period has enjoyed his patent rights in the invention of ...
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... Morse , " but we may , nevertheless , state con- cisely the impression left upon our minds after the perusal of the evidence pro and con . , which was kindly placed in our hands by Professor Morse . A conversation appears to have been ...
... Morse , " but we may , nevertheless , state con- cisely the impression left upon our minds after the perusal of the evidence pro and con . , which was kindly placed in our hands by Professor Morse . A conversation appears to have been ...
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... Morse . Dr. Jackson -who possesses an unenviable reputation in America for setting up claims to other people's inventions - in his state- ments made in 1837 * and in 1850 , † is guilty of considerable self - contradiction , and only in ...
... Morse . Dr. Jackson -who possesses an unenviable reputation in America for setting up claims to other people's inventions - in his state- ments made in 1837 * and in 1850 , † is guilty of considerable self - contradiction , and only in ...
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Términos y frases comunes
alphabet alternate currents armature arrangement atmospheric electricity attracted axis back contact beam bottom cable carried clockwork coils commutator connected consists construction contact-pins copper core corresponding current passes currents arriving cylinder deflected dial direction disc drum electricity electro-magnet employés galvanic galvanometer galvanoscope gutta percha hemp holes horizontal inductor inserted insulated intermediate station interrupted iron wires knot length letter lever Leyden jar lifted line battery line wire line-wire local battery means Messrs metal method mètre Morse apparatus motion needle negative current opposite paper strip permanent magnet plate pointer poles positive current posts pressed printing printing-press ratchet-wheel ratus receiving station relay resistance roller rotating round scape-wheel screw sending station shaft shown in Fig side Siemens signals soft-iron spiral spring style surface switch synchronism teeth terminal tion tongue tooth transmitting tube turning type-wheel underneath upper vertical vulcanite wheel whilst wire zinc
Pasajes populares
Página 5 - he felt himself struck in his arms, shoulders, and breast, so that he lost his breath, and was two days before he recovered from the effects of the blow and the terror.
Página 11 - ... and his wife, by remarking the corresponding motions of the ball, writes down the words they indicate: from which it appears he has formed an alphabet of motions. As the length of the wire makes no difference in the effect, a correspondence might be carried on at any distance...