Transactions of the American Institute of Electrical EngineersAmerican Institute of Electrical Engineers., 1903 "Index of current electrical literature" Dec. 1887-1890 appended to v. 5-7. |
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alternating current AMERICAN INSTITUTE amperes apparatus arc lamp armature axle belt brushes cable Carnegie cent central station charge coil Committee commutator condenser conductors connected constant cost cross-arm Curie curves devices diagram direct current discussion dynamo Edison effect ELECTRICAL ENGINEERS electromotive force employed exciting current exciting winding experiments field give glass Heyland high-tension increase induction motor INSTITUTE OF ELECTRICAL insulator J. J. Thomson lamp leakage light load machine magnetic matter mechanical method operation paper phase phosphorescent placed plant plate pole polonium position potential power factor Prof radioactive radium rays reactance reciprocating engine regulation represents resistance Ruhmer selenium cell short circuit shown in Fig shunt signal single-phase slip current speed steam storage battery subscriber subscriber's substances substations switch switchboard telephone line terminal tion to-night train transformer transmission line tube turbine uranium vector voltage volts wires York
Popular passages
Page 29 - The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they display knowledge. There is no speech or language where their voice is not heard.
Page 488 - Society representing the American Society of Civil Engineers, the American Society of Mechanical Engineers, the American Institute of Electrical Engineers, and the American Institute of Mining and Metallurgical Engineers, provides the division with an office in the Engineering Societies Building, 29 West Thirty-ninth Street, New York.
Page 331 - Fluorescence " to the phenomena which certain substances present in altering the very short waves of ultra-violet light, which are invisible, and transforming them into waves of longer length so that they become visible to our eyes. In electrical parlance a fluerescent substance might be termed a step-down transformer or perhaps more correctly a -frequency changer for light waves. Stokes, as a result of his investigations, framed this law, " When the refrangibility of light is changed by fluorescence...
Page 349 - ... of that transformation which cannot be located during a year the amount of energy involved in that transformation is tremendous. The second hypothesis consists in the supposition that radium is capable of capturing and utilizing some radiations of unknown nature which cross the space without our knowledge.
Page 277 - If an insulator is built up of several parts, each part should be able to withstand a pressure greater than it will have to sustain when the complete insulator is tested. If it is to be tested for 100,000 volts and is made in two parts, each part might, for instance, be tested with 70,000 volts. The object of this is to have the weak parts rejected before they are assembled.
Page 243 - When mounted on pins the insulator should stand a side strain of at least ten times the pressure exerted by the air on the conductor with a wind velocity of, say, 100 miles an hour. It should also be able to slip the conductor through the tie-wire should the former break. These tests are particularly desirable with built-up insulators in order to be certain that the parts will not separate. With such insulators, it would also be well to test them in tension along the axis of the pin, as in transmission...
Page 357 - ... the appendix of a paper read by the writer at the 159th meeting of the INSTITUTE on January 3, 1902, dealing with the subject of radioactivity, Prof. Curie told the writer that he would not care to trust himself in a room with a kilo of pure radium, as it would burn all the skin off his body, destroy his eyesight and probably kill him. The writer felt the effects for weeks of a slight burn from inadvertently carrying a wooden box containing eight tiny sealed glass tubes of radium under his arm...
Page 373 - ... experimenting with selenium in liquid form. Selenium is usually supplied commercially in a vitreous form. Here are some samples of it, and you will note that it is as structureless as glass and resembles black sealing wax. I also have here some amorphous selenium in which form it is a finely divided brick red powder. This changes into vitreous selenium when exposed to a temperature of from 80° to 100° Centigrade. In order to obtain crystalline selenium, in which form it is useful for selenium...
Page 357 - Engineers, that he would not care to trust himself in a room with a kilogram of pure radium, because it would doubtless destroy his eyesight, burn all the skin off his body, and probably kill him.
Page 340 - ... devised ; and that finally there seems to be no reason why we are forbidden to hope that we may yet discover a method (since such a one certainly exists and is in use on the small scale) of obtaining an enormously greater result than we now do from our present ordinary means for producing light.