The Electric Telegraph Popularised
Walton and Maberly, 1855 - Telegraph - 144 pages
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Common terms and phrases
according action addressed adopted agent alarum already apparatus appears armature arrival battery cable called carried celerity Chap characters clock coil commutator Company complete conducting wire connection consists constructed continuous convenient copper corresponding countries deflected described desired dial direction dispatch distance earth effects electric telegraph electro-magnet established example expedient explained express extended fixed flow force French give given greater hand hour imparted indicating instruments intensity intervals iron laid length less letter lever line-wire London magnet manner marked means messages metallic miles motion moved necessary needle observed operation pass placed plate pole position practical present pressed produced pulsations railway received represented ribbon sent signals spring station stop submarine succession sufficient suppose suspended telegraphic lines transmission transmitted turned United various wheel York
Page 132 - Introduction.— Gravity and its Effects.— Tides.— Heat within the Earth. — Warm Springs.— Hot Springs and Jets of Steam.— Jets of Gas and Mud Volcanoes. — Volcanoes and Earthquakes. — Temperature of the Outermost Crust of the Earth. — Temperature of the Lowest Layer of the Atmosphere —Lines of equal Heat. — Temperature of the Upper Layers of the Atmosphere. — The Snow Limits. —Glaciers.— Temperature of the Waters, and their Influence on Climate.— Currents of the Sea....
Page 103 - Canst thou lift up thy voice to the clouds, That abundance of waters may cover thee? Canst thou send lightnings, that they may go, And say unto thee, Here we are?
Page 91 - THE ELECTRIC TELEGRAPH POPULARISED. To render intelligible to all who can Read, irrespective of any previous Scientific Acquirements, the various forms of Telegraphy in Actual Operation. 100 Illustrations, cloth gilt, is. 6d. Dr. Lardner s Handbooks of Natural Philosophy.
Page 157 - ... a plateau, which seems to have been placed there especially for the purpose of holding the wires of a submarine telegraph, and of keeping them out of harm's way. It is neither too deep nor too shallow ; yet it is so deep that the wires, but once landed, will remain forever beyond the reach of vessels...
Page 125 - POPULAR PHYSICS. Containing Magnitude and Minuteness, the Atmosphere, Meteoric Stones, Popular Fallacies, Weather Prognostics, the Thermometer, the Barometer, Sound, &c. 85 Illustrations, cloth gilt, 2s.
Page 96 - In a commercial point of view, the line in question assumes a gigantic importance, and presents itself not only in the attitude of a means of communication between the opposite extremes of a single country, however great, but as a channel for imparting knowledge between distant parts of the earth. With the existing facilities, it requires months to convey information from the sunny climes of the East to the less favored, in point of climate, but not less important regions of the West, teeming as...
Page 157 - ... sand, gravel, and other matter; but not a particle of sand or gravel was found among them. Hence the inference that these depths of the sea are not disturbed either by waves or currents. Consequently, a telegraphic wire once laid there, there it would remain, as completely beyond the reach of accident as it would be if buried in air-tight cases.
Page 130 - This Work obtained the Prize of Fifty Guineas offered by the Young Men's Christian Association for the best Essay on "The Evils of the Present System of Business, and the Difficulties they Present to the Attainment and Development of Personal Piety, with Suggestions for their Removal.
Page 203 - To produce the effects, whatever these may be, by which the telegraphic messages are expressed, it is necessary that the electric current shall have a certain intensity. Now, the intensity of the current transmitted by a given voltaic battery along a given line of wire will decrease, other things being the same, in the same proportion as the length of the wire increases. Thus, if the wire be continued for ten miles, the current will have twice the intensity which it would have if the wire had been...
Page 52 - AM — Special train arrived. Officers have taken the two thieves into custody, a lady having lost her bag containing a purse with two sovereigns and some silver in it; one of the sovereigns was sworn to by the lady as having been her property. It was found in Fiddler Dick's watch-fob." "It appears," continues the writer, "that on the arrival of the train, a policeman opened the door of the 'third compartment of the first second-class carriage,' and asked the passengers if they missed anything.