This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ... allows the charge on the bodies to pass in the form of an electric spark. Mechanical analogue of electrically-charged bodies and of the electric field.--Imagine two cavities A and B, Fig. 102b, in an extended elastic solid such as rubber or jelly. Imagine these cavities to be filled with water and to be connected to a ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 Excerpt: ... allows the charge on the bodies to pass in the form of an electric spark. Mechanical analogue of electrically-charged bodies and of the electric field.--Imagine two cavities A and B, Fig. 102b, in an extended elastic solid such as rubber or jelly. Imagine these cavities to be filled with water and to be connected to a pump by means of a pipe so that the pump may draw a certain amount of water out of one cavity and force it into the other, thus causing one cavity to contract and the other cavity to expand, and causing the surrounding mass of rubber or jelly to be strained, the lines of stress or strain being somewhat as shown in the figure. The expanded cavity is analogous to a positively charged body, the contracted cavity is analogous to a negatively charged body, the stressed condition of the rubber or jelly is analogous to the electric field between two charged bodies and the pressure-difference of the pump is analogous to the electromotive force of the battery in Fig. 102a. 88. Electrostatic capacity. The condenser.--The amount of charge q which flows out of B and into A, Fig. 102a, when the battery is connected is proportional to the electromotive force of the battery. Therefore we may write q=CE (61) in which q is the charge that is drawn out of B and forced into A, in Fig. 1020, by a battery of which the electromotive force is E, and C is a constant depending upon the size and shape of A and B and upon the nature of the intervening dielectric. This quantity C is called the electrostatic capacity or simply the capacity of the pair of bodies A and B. If the bodies A and B are in the form of flat plates of metal separated by a thin layer of dielectric their electrostatic capacity is large. Such an arrangement is called a condenser. Condensers are usual...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
