Transactions of the American Institute of Electrical EngineersAmerican Institute of Electrical Engineers., 1903 - Electric engineering "Index of current electrical literature" Dec. 1887-1890 appended to v. 5-7. |
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alternating current amperes apparatus armature axle brushes cables cent central station charge coil Committee commutator condenser conductors connected constant cost cross-arm curves devices diagram direct current discussion dynamo Edison effect ELECTRICAL ENGINEERS electromotive force exciting current exciting winding experiments give glass ground Heyland high-tension inch increase induction motor installed INSTITUTE OF ELECTRICAL insulator iron pin J. J. Thomson lamp leakage light load machine magnetic mechanical Mershon method operation paper phase phosphorescent placed plant plate pole polonium porcelain potential power factor practically Prof radioactive radium rays reactance reciprocating engine regulation relay resistance rotary converters selenium cell short circuit shown in Fig shunt speed steam storage battery subscriber substances substations surface switch switchboard synchronous telephone circuit telephone line terminal tion train transformer transmission line trouble tube turbine units uranium vector voltage volts wires wooden pins York
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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 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 331 - ... Stokes has given the name of " 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...
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 284 - ... may be almost anything, depending upon the relations between these two quantities Further, if by telephones of various resistances it is meant to designate telephones of various numbers of turns in the transmitter, then it seems to me the statement in regard to the disturbing ampere-turns is incorrect. The resistance of a coil varies as the square of the number of turns (assuming the same space available in each case for copper). The ampere-turns on constant emf vary, therefore, inversely as...
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 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 357 - As stated in 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...
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 361 - Villard, in 1899, proved that the cathode rays are negatively electrified corpuscles or fragments of atomic hydrogen, and these corpuscles, as they were named by JJ Thomson, which he has shown to be one one-thousandth of the mass of the hydrogen atom, are projected from the .cathode at a speed approximating 70,000 miles per second. The " f " rays are the rays possessing the greatest penetrative effect. They will excite or produce radioactivity through the air at a distance of three or four feet or...