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Accumulator acidulated water action active material ammonium chloride ampere-hours amperes Antimony battery Becquerel Bismuth Cadmium calories Cd Cd Cd cent charge chemical reaction circuit connected containing copper sulphate couple cylinder Daniell cell decomposition depolarizer deposit difference dilute sulphuric acid discharge disengaged disks dissolved elec electricity electrode electrolyte electromotive force exciting liquid glass grams heat hydrochloric acid hydrogen immersed internal resistance Iridium iron lead peroxide manganese mercury metal Mg Mg Mg mixture negative electrode Nickel nitrate nitric acid obtained ohms oxide oxygen Pd Pd placed platinum Platinum or gold polarization porous cup positive electrode potash produced quantity Rh Rh Rh Rhodium salt Silicium silver sodium chloride solution of copper solution of sodium solution of zinc sulphate of copper sulphate of zinc sulphuric acid surface Tellurium temperature Thallium Thallium Thallium tion Tl Tl tube vessel voltaic voltmeter volts wire zinc sulphate Zn Zn Zn
Page 10 - 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 245 - ... boilingpoint ; the salt, which is a nearly insoluble white powder, should be well washed in distilled water, and care should be taken to obtain it free from the mercuric sulphate (persulphate), the presence of which may be known by the mixture turning yellowish on the addition of water. The careful washing of the salt is a matter of essential importance, as the presence of any free acid, or of persulphate, produces a considerable change in the electromotive force of the cell.
Page 11 - The anode is therefore that surface at which the electric current, according to our present expression, enters: it is the negative extremity of the decomposing body; is where oxygen, chlorine, acids, &c., 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 2 - We have the strongest reason for believing that what the nerves convey to the brain is, in all cases, motion. The motion here meant is not, however, that of the nerve as a whole, but of its molecules or smallest particles.
Page 301 - ... soldered junctions, and with them to obtain the results. I now come to the special point which is the occasion of this communication. A few days ago I was investigating the effect of static charges communicated to the plates on the sensitive and insensitive states, and in the course of these experiments I found that if a Voss machine, not in any way connected with the cell or the electrometer, was worked in the room while the cell was in the insensitive state, the moment a spark passed between...
Page 10 - ... with two friends, and with their assistance and concurrence in framing them, I purpose henceforward using certain other terms, which I will now define. The poles, as they are usually called, are only the doors or ways by which the electric current passes into and out of the decomposing body (556.) ; and they of course, when in contact with that body, are the limits of its extent in the direction of the current.
Page 7 - The chemical theory assumes, that at the place of action, the particles which are in contact act chemically upon each other and are able, under the circumstances, to throw more or less of the acting force into a dynamic form...
Page 9 - By current, I mean anything progressive, whether it be a fluid of electricity, or two fluids moving in opposite directions, or merely vibrations, or, speaking still more generally, progressive forces.
Page 10 - ... and for the sake of greater precision of expression than I can otherwise obtain, I have deliberately considered the subject with two friends, and with their assistance and concurrence in framing them, I purpose henceforward using certain other terms, which I will now define. The poles, as they are usually called, are only the doors or ways by which the electric current passes into and out of the decomposing body...