Electricity in Every-day Life ...P. F. Collier & Son, 1904 - Electric industries |
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Common terms and phrases
acid action alarm alternating currents ampères annunciator anode apparatus armature arranged automatic bell cable called carbon cause charge chemical circuit conductors connected consists copper current strength cylinder decomposition diaphragm discharge distance dynamo elec electric current electric furnace electric heater electric resistance electric telegraph electro-chemical electro-magnet electro-static electrolytic employed fuse wire glass graphite ground gutta-percha heat incandescent induction coil insulated invention iron lamp lever Leyden jar light lightning arrester line wire liquid local battery magnet manner means ment metallic microphone Morse move movements nected needle negative Niagara Falls number of separate obtained operation paper fillet photophone placed plates platinum ployed pole positive practically produced readily receiving instrument record relay represented in Fig resistance sent shown in Fig signals solution sound station storage battery surface switch switchboard tele telegraph line telephone temperature terminal tion to-and-fro transmitting tube vibrations voltaic battery voltaic cell welding wireless
Popular passages
Page 202 - If the British march By land or sea from the town to-night, Hang a lantern aloft in the belfry arch Of the North Church tower as a signal light, — One, if by land, and two, if by sea ; And I on the opposite shore will be, Ready to ride and spread the alarm Through every Middlesex village and farm, For the country folk to be up and to arm.
Page 94 - The thing that hath been, it is that which shall be; and that which is done is that which shall be done: and there is no new thing under the sun. Is there anything whereof it may be said, "See, this is new"? it hath been already of old time, which was before us.
Page 18 - The potash began to fuse at both its points of electrization. There was a violent effervescence at the upper surface; at the lower, or negative surface, there was no liberation of elastic fluid ; but small globules having a high metallic lustre, and being precisely similar in visible characters to quicksilver, appeared, some of which burnt with explosion and bright flame, as soon as they were formed, and others remained, and were merely tarnished, and finally covered by a white film which formed...
Page 28 - If we accept the hypothesis that the elementary substances are composed of atoms we cannot avoid concluding that electricity also, positive as well as negative, is divided into definite elementary portions, which behave like atoms of electricity.
Page 210 - In electricity he has made a remarkable discovery : you write two or three words on a paper ; he takes it with him into a room, and turns a machine inclosed in a cylindrical case, at the top of which is an electrometer, a small fine pith ball; a wire connects with a similar cylinder and electrometer in a distant apartment ; and his wife, by remarking the corresponding motions of the ball, writes down the words they indicate : from which it appears that he has formed an alphabet of motions. As the...
Page 335 - ... big enough, to lay a coil of wire sixteen hundred miles in length ; though I have no fear but that the enterprise and ingenuity of the age, whenever called on with these problems, will be ready with a satisfactory and practical solution of them.
Page 225 - Indeed, so straitened were my circumstances, that in order to save time to carry out my invention, and to economize my scanty means, I had for months lodged and eaten in my studio, procuring my food in small quantities from some grocery, and preparing it myself. To conceal from my friends the stinted manner in which I lived, I was in the habit of bringing my food to my room in the evenings, and this was my mode of life for many years.
Page 104 - Electrical undulations, induced by the vibration of a body capable of inductive action, can be represented graphically without error, by the same sinusoidal curve which expresses the vibration of the inducing body itself, and the effect of its vibration upon the air ; or, as above stated, the rate of oscillation...
Page 208 - If anybody should think this way tiresome, let him, instead of the balls, suspend a range of bells from the roof, equal in number to the letters of the alphabet; gradually decreasing in size from the bell A to Z; and from the...
Page 335 - I simply address myself at this time to the question in so far as the bottom of the sea is concerned, and as far as that, the greatest practical difficulties will, I apprehend, be found after reaching soundings at either end of the line, and not in the deep sea.