The Electrical Review, Volume 21Electrical review, Limited, 1887 - Electrical engineering |
Contents
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Common terms and phrases
acid alloy alternating currents aluminium ampères apparatus applied arc lamps armature arrangement August AUGUST 12 C₁ cable carbon carried cells cent charge circuit coils conductors connected copper crucible Dated July deflection deposit described directors dividend dynamo Edison effect elec electric light ELECTRICAL REVIEW electrician electro-magnet electromotive force employed engine Exhibition experiments Frederick Bramwell galvanometer German silver give heat incandescent lamps inches increase induction instrument insulation invention iron kryolite lines of force machine magnet magnetised matter means measured ment Messrs metal meter method motor needle obtained ohms ordinary paper passing patent placed plate poles practical Prof pulley R₁ railway resistance result secondary batteries self-induction September shares shunt signal solution speed station storage battery Street switch tele Telegraph Company telephone temperature tion tube voltmeter volts wire zinc
Popular passages
Page 156 - By the deflection of the needle to the right or to the left, according to the direction in which...
Page 256 - Whenever the company has passed an extraordinary resolution to the effect that it has been proved to their satisfaction that the company cannot by reason of its liabilities continue its business and that it is advisable to wind up the same...
Page 77 - A wire connecting the platinum and zinc ends of a battery is stretched vertically half way between the needles. How will the current in the wire affect the needles, and how will the result depend upon whether the platinum terminal is connected with the upper or lower end of the wire respectively ? 14.
Page 156 - In a very early stage of electro-magnetic experiments it had been suggested that an instantaneous telegraph might be established by means of conducting wires and compasses. The details of this contrivance are so obvious, and the principle on which it is founded so well understood, that there was only one question which could render the result doubtful ; and this was, — is there any diminution of effect by lengthening the conducting wire...
Page 244 - ... those beneath the screen) will be equidistant from the poles and will be equally attracted on the two sides. But if the screen be turned about the axis of rotation, so that one of its ends is nearer one of the poles and the other nearer the other, then rotation of the bundle will ensue, since the portion under the screen, which is cooler and therefore magnetizable, is continually more strongly attracted than the other and heated portion. This device acts therefore as a...
Page 244 - A description of this motor will help us to understand the generator subsequently constructed. Suppose a permanent magnet, having a bundle of small tubes made of thin iron placed between its poles and capable of rotation about an axis perpendicular to the plane of the magnet, after the fashion of an armature. Suppose, further, that by suitable means such as a blast or a draught, hot air can be made to puss through these tubes so as to raise them to redness.
Page 74 - The intensity of the magnetic field in which the coil is situated is such that whenever the galvanometer-circuit is closed — even through a considerable resistance— the motion of the needle is dead-beat. It takes less than one second to come to rest at its final position of deflection, and when it returns to zero it does so with the most complete absence of oscillations.
Page 105 - O'ER the glad waters of the dark blue sea, Our thoughts as boundless, and our souls as free, Far as the breeze can bear, the billows foam, Survey our empire, and behold our home ! These are our realms, no limits to their sway — Our flag the sceptre all who meet obey.
Page 156 - It had been stated that the electric fluid from a common electrical battery had been transmitted through a wire four miles in length without any sensible diminution of effect, and to every appearance instantaneously, and if this should be found to be the case with the galvanic circuit, then no question could be entertained of the practicability and utility of the suggestion above adverted to.
Page 7 - ... greater efficiency if the wells were deepened to penetrate all the water-bearing formations. Many of the plants comprising two or more wells are poorly constructed and most battery wells are not spaced widely enough to prevent excessive mutual interference. In several plants the wells are not aligned in a direction at right angles to the direction of movement of the ground water, causing an increase in the mutual interference of the wells. 92 Some of the wells in the Arkansas valley and in the...