Electricity Treated Experimentally: For the Use of Schools and StudentsNew York, 1891 - 405 pages |
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Common terms and phrases
absolute unit action ampères armature arrangement attraction battery current body bound charge brass called cell centimetres centre charge circuit coil of wire conductor connected consists contact breaker copper sulphate current passes current strength decomposition deflection difference of potential disc discharge distance ductor earth ebonite electrified electro-magnet electrolyte electrometer electroscope energy equal experiment external resistance friction galvanometer glass gram Grove cells heat horizontal hydrogen induced current instrument insulated Leyden jar lines of force liquid machine magnet pole magnetic field magnetic force magnetic meridian mercury cup metal molecules motion needle negative neutralise north pole observed Ohm's law ohms oscillations oxygen parallel permanent magnet placed plane plate platinum position potential difference proof-plane proportional quadrant repulsion right angles rotation round screw separated shown shows silk soft iron south pole spark surface suspended temperature terminals thermo-electric tinfoil tion torsion circle tricity vertical voltaic zinc sulphate
Popular passages
Page 90 - I went into the cube and lived in it, and using lighted candles, electrometers, and all other tests of electrical states, I could not find the least influence upon them, or indication of...
Page 202 - I propose to distinguish such bodies by calling those onions^ which go to the anode of the decomposing body; and those passing to the cathode, cations^.; and when I have occasion to speak of these together, I shall call them ions. Thus, the chloride of lead is an electrolyte, and when electrolyzed evolves the two ions, chlorine and lead, the former being an anion, and the latter a cation.
Page 202 - ... are evolved; and is against or opposite the positive electrode. The cathode is that surface at which the current leaves the decomposing body, and is its positive extremity; the combustible bodies, metals, alkalies, and bases, are evolved there, and it is in contact with the negative electrode.
Page 192 - Hence, as an approximation, and judging from magnetic force only at present (112), it would appear that two wires, one of platina and one of zinc, each one-eighteenth of an inch in diameter, placed five-sixteenths of an inch apart and immersed to the depth of five-eighths of an inch in acid, consisting of one drop...
Page 201 - In place of the term pole, I propose using that of electrode,* and I mean thereby that substance, or rather surface, whether of air, water, metal, or any other body, which bounds the extent of the decomposing matter in the direction of the electric current.
Page 192 - ... of an inch in acid, consisting of one drop of oil of vitriol and four ounces of distilled water at a temperature of about 60°...
Page 193 - I am enabled to draw respecting the magnetic and chemical action of electricity (360. 366. 367. 377. &c.). 290. The plate electrical machine I have used is fifty inches in diameter; it has two sets of rubbers; its prime conductor consists of two brass cylinders connected by a third, the whole length being twelve feet, and the surface in contact with air about 1422 square inches. When in good excitation, one revolution of the plate will give ten or twelve sparks from the conductors, each an inch in...
Page 401 - Force is that which changes or tends to change a body's state of rest or uniform motion in a straight line.
Page 25 - That law is otherwise expresseil by saying the length of the thread is inversely as the square of the number of oscillations made in a given time...
Page 403 - ... -product of the mass of the body into the square of its velocity. Kinetic energy is the actual energy of a moving body ; potential energy is the measure of the work which a body is capable of doing under certain conditions which, without expending energy, may be made to affect it, as by the breaking of a cord by which a weight is suspended, or by firing a mass of...