Thomas Alva Edison: Sixty Years of an Inventor's Life

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T. Y.Crowell & Company, 1908 - Inventors - 362 pages
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Page 6 - I was always a careless boy, and with a mother of different mental caliber I should have probably turned out badly. But her firmness, her sweetness, her goodness, were potent powers• to keep me in the right path. I remember I used never to be able to get along at school.
Page 117 - ... one of the machines to see how things were. My heart was in my mouth at first, but everything worked all right and we had more than 500 ohms insulation resistance. Then we started another engine and threw them in parallel. "Of all the circuses since Adam was born, we had the worst then.
Page 7 - ... her sweetness, her goodness, were potent powers to keep me in the right path, I remember I used never to be able to get along at school. I don't know what it was, but I was always at the foot of the class. I used to feel that the...
Page 163 - Edison stated that he was attempting to devise "an instrument which would do for the eye what the -phonograph does for the ear, and that by the combination of the two all motion and sound could be recorded and reproduced simultaneously.
Page 130 - As a matter of curiosity I have made spirals of other metals, and excluded the air from them in the manner stated. Common iron wire may be made to give a light greater than platinum not treated.
Page 128 - When wound in the form of a spiral it is as springy and elastic when at the most dazzling incandescence as when cold, and cannot be annealed by any process now commonly known. " For the cause of this shrinking and cracking of the wire is due entirely to the expansion of the air in the mechanical and physical pores of the platinum, and the contraction upon the escape of the air.
Page 127 - If a short length of platinum wire one-thousandth of a inch in diameter be held in the flame of a Bunsen burner, at some part it will fuse, and a piece of the wire will be bent at an angle by the action of the globule of melted platinum ; in some cases there are several globules formed simultaneously, and the wire assumes a zigzag shape. With a wire...
Page 94 - I had just finished working on the carbon-button telephone, and this electric-light idea took possession of me. It was easy to see what the thing needed: it wanted to be subdivided. The light was too bright and too big. What we wished for was little lights, and a distribution of them to people's houses in a manner similar to gas. Grovernor P. Lowry thought that perhaps I could succeed in solving the problem, and he raised a little money and formed the Edison Electric Light Company. The way we worked...
Page 111 - The invention further consists in placing such burner of great resistance in a nearly perfect vacuum, to prevent oxidation and injury to the conductor by the atmosphere. The current is conducted into the vacuum bulb through platina wires sealed into the glass.
Page 123 - ... lightened over all the city of Rome from the one corner to the other; and there was not so little a street but it gave such a light that it seemed two torches there...

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