# Advanced Theory of Electricity and Magnetism: A Textbook for Colleges and Technical Schools

Franklin and Charles, 1919 - Electricity - 300 pages

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Page 17 - The sum of the forces acting on a body is equal to the product of the mass of the body and the acceleration produced by the forces.
Page 118 - ... to AB. The component which is at right angles to AB has no perceptible magnetizing action on AB, the component which is parallel to AB causes the end B to become a north pole and the end A to become a south pole, and the magnetic field at C due to these magnet poles is parallel to BA and towards A. The magnetic field at the •compass box which is due to the temporary magnetism of the bar AB in Fig.
Page 254 - Fig. 175, energy will be transferred to the right (or left) by each horizontal chain of geared cells at a rate which is proportional to the product of the intensity of the magnetic field and the intensity of the electric field ; and the energy per second flowing across an area...
Page 82 - The magnetomotive force along a path which links with one turn of wire carrying one ampere of current is called one ampereturn. The magnetomotive force of any coil, in ampere-turns, is equal to the product of the current flowing in the coil in amperes and the number of turns of wire in the coil. In magnetic calculations it is usually convenient to reduce ampere-turns of magnetomotive force to cgs units (gilberts), which is done by multiplying ampere-turns by 4ir/10, according to equation (2) of Art.
Page 2 - ... like magnetic poles repel each other, and unlike magnetic poles attract each other.
Page 261 - B will be relieved from the electrical stress. The explanation here given of the entire relief of the electrical stress between two plates by the establishment of a conducting line (line of slip) between them, applies to two adjacent oppositely charged bodies of any shape. An electric spark is a line of slip (a conducting line) and the energy of the electic field flows in upon the spark as it does upon a wire.
Page 78 - ... wire. This magnetomotive force along an endless rod which links with a coil of wire in which an electric current is flowing, is called the magnetomotive force of the coil. Examples. — Fig. 3 shows a two-pole dynamo with two field coils ZZ. The field magnet iron of this dynamo together with the...
Page 261 - Fig. 1 84, this dotted line being everywhere perpendicular to the lines of force of the electric field. When A is positively charged this chain is distorted as shown (in part), but, inasmuch as it is a closed chain, its distortion is fixed, as explained in connection with Fig.
Page 252 - Fig. 177, along which an electric current is flowing from B towards A. The magnetic field on opposite sides of AB is in opposite directions, so that the positive ether cells at p and p' are ' rotating in opposite directions as shown.
Page 262 - If the slip which relieves the distortion of the chain of ether cells is almost frictionless (low electrical resistance of the conducting path formed by the spark), then the energy of the distorted chain is used mostly in overcoming the inertia of the cells as they are set rotating, and after a very short interval of time the whole of the electrical energy will have been converted into kinetic energy of the rotating cells (magnetic energy). During this conversion the energy, streaming along the dotted...