Electricity: Its Theory, Sources, and Applications

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E. & F.N. Spon, 1884 - 650 páginas
 

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Página 230 - A unit pole is that which repels another similar and equal pole at a distance of one centimetre with a force of one dyne.
Página 25 - ... is determined by the equilibration of these two forces. If the atoms come too near, repulsion predominates and drives them apart ; if too distant, attraction predominates and draws them together. The point at which attraction and repulsion are equal to each other is the atom's position of equilibrium. If not absolutely cold— and there is no such thing as absolute coldness in our corner of nature — the atoms are always in a state of vibration, their vibrations being executed to and fro across...
Página 25 - ... members of this group part company ? The molecules do separate from each other when the external pressure is lessened or removed, but the atoms do not. The reason of this stability is that two forces, the one attractive and the other repulsive, are in operation between every two atoms...
Página 16 - Static Electricity is, however, a misnomer : it has no existence : all the phenomena are due to static strains, but there is always a gradual loss called leakage, which is, however, the current due to the actual conductivity of all circuits, and every motion set up by so-called static electricity implies a transfer of energy and action occurring in a field of force set up in the form of strains in the particular inductive circuit in which the motions occur."4 A third objects to the word "tension...
Página 451 - ... draws near, the pith balls suspended from the conductor open wide, with either positive or negative Electricity ; and when the edge of the cloud is perpendicular to the exploring wire, a slow succession of discharges takes place between the brass ball of the conductor and one of equal size, carefully connected with the nearest spot of moist ground. I usually connect a large jar with the conductor, which increases the force...
Página 20 - In the larger treatise I sometimes made use of methods which I do not think the best in themselves, but without which the student cannot follow the investigations of the founders of the Mathematical Theory of Electricity. I have since become aware of the superiority of methods akin to those of Faraday, and have therefore adopted them from the first.
Página 624 - or " cation," and " ions." Take, for example, the definition given by Sprague* of " anode " : " The positive electrode or pole of a battery ; the wire or plate connected to the copper or other negative element of the battery ; the plate which leads the + current into a solution to be decomposed, and at which are set free the oxygen, acid radicals and all — ions (anions).

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