. The elements of physiological physics: an outline of the elementary facts, principles, and methods of physics; and their applications in physiology. Biophysics. chap, i.] CONDENSERS. 11 sealing wax, and the discharging rods n m connected with the conductors, are brought into contact. This armature induces positive electricity on the surface of the glass plate next to it, and negative electricity on the surface opposite the brass points. The — elec- tricity of the glass causes the brass points to discharge + electricity on to the glass, and so to become nega- tively charged. The glass plate i
. The elements of physiological physics: an outline of the elementary facts, principles, and methods of physics; and their applications in physiology. Biophysics. chap, i.] CONDENSERS. 11 sealing wax, and the discharging rods n m connected with the conductors, are brought into contact. This armature induces positive electricity on the surface of the glass plate next to it, and negative electricity on the surface opposite the brass points. The — elec- tricity of the glass causes the brass points to discharge + electricity on to the glass, and so to become nega- tively charged. The glass plate is now turned, and, when the part positively charged from the brass points comes opposite the second armature, it charges it positively, and induces the opposite brass points to discharge — electricity and to remain positively charged. The portion of the plate, now negatively charged, still being revolved, returns to the first armature, increases its - - charge, and so heightens its inductive action. The knobs n in in connection with the brass points, are thus charged, the one with -+- the other with — electricity. On the knobs being separated, and the plate rapidly turned, a series of sparks dart across from one knob to the other. Condensers are instruments for concentrating a large quantity of electricity on a small surface, an action also effected by induction. The Leyden jar is the best example. It consists of a glass jar or bottle, coated inside and outside with tinfoil, up to a few inches from the neck. The mouth is stopped with a cork or a plug of hard wood, in which is fixed a metal rod, terminating out- side in a knob, and having a chain hanging from it inside Fig. Jar. and touching the inner of tinfoil. The jar is charged by connecting the outer coat with the ground, as, also, by holding it so that the hand touches that coating, and presenting the knob to the conductor of a friction machine. If the. Please note that these images are extracted fr
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1884
