Annals of Electricity, Magnetism, and Chemistry: And Guardian of Experimental Science, Volume 3Sherwood, Gilbert, and Piper., 1839 |
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action ammoniac angles Annals antimony apparatus appears armature arrangement atmosphere atoms battery current Becquerel bismuth bodies carbonic acid cells centimetre charcoal chemical circuit coil conducting liquid conducting power conductor connected connexion copper copper wire Cubic inches cylinder decomposed decomposition deflection direction discharging dissolved distance distilled water effect electric current electro-magnetic electro-motive electrodes electrolyte employed equal experiments extra current fluid force galvanic galvanometer glass heat hydrogen increased inductive influence instrument intensity iron length liquid bed machine magnetic bar magnetometer means ment mercury metallic motion nature needle number of pairs observed obtained opposite oxide oxygen particles pass phenomena pile placed plates platina polar portion positive produced quantity reophorous repulsion sal ammoniac salt screw sparks substance sulphate of copper sulphuric acid surface tartaric acid telegraph temperature theodolite thread tion torsion tricity tube vessel voltaic voltameter WILLIAM STURGEON zinc
Popular passages
Page 428 - I have lately succeeded in producing motion in a little machine by a power, which, I believe, has never before been applied in mechanics — by magnetic attraction and repulsion. Not much importance, however, is attached to the invention, since the article, in its present state, can only be considered a philosophical toy; although, in the progress of discovery and invention, it is not impossible that the same principle, or some modification of it on a more extended scale, may hereafter be applied...
Page 306 - I took a voltaic apparatus, consisting of a single pair of large plates, namely a cylinder of amalgamated zinc and a double cylinder of copper. These were put into a jar containing dilute sulphuric acid, and could at pleasure be placed in metallic communication by a copper wire connecting the two plates.
Page 309 - ... was put into each cell and connected with a delicate galvanometer, but no electric current could be observed. Hence the contact of acid with one platina plate, and alkali with the other, was unable to produce a current ; nor was the combination of the acid with the alkali more effectual (925.). 939. When one of the platina plates was removed and a zinc plate substituted, either amalgamated or not, a strong electric current was produced. But, whether the zinc were in the acid whilst the platina...
Page 491 - ... the positive to the negative wire, first overcoming the resistance occasioned by the compact texture of the bladder, so as in about half an hour to have brought the water in both cells to the same level, and afterwards overcoming the additional resistance occasioned by the gravitation of the water, by continuing to convey that fluid into the negative cell, until its surface in that cell was upwards of § of an inch higher than in the positive cell.
Page 303 - ... (858.) in a certain constant order, and therefore the appearance of the elements in certain places shows in what direction a current has passed when the solutions are thus employed. Moreover, we find that when they are used at opposite ends of the plates, as in the last two experiments (889. 890.), metallic contact being allowed at the other extremities, the currents are in opposite directions. We have evidently, therefore, the power of opposing the actions of the two fluids simultaneously to...
Page 401 - The identity of the force constituting the voltaic current or electrolytic agent, with that which holds the elements of electrolytes together (855), or in other words with chemical affinity, seemed to indicate that the electricity of the pile itself was merely a mode of exertion, or exhibition, or existence of true chemical action, or rather of its cause; and I have consequently already said that I agree with those who believe that the supply...
Page 143 - I have shown above, is equivalent to the production of 2.4 cubic feet of carbonic acid. It will follow from this that two such table lamps burning together will produce nearly as much carbonic acid in the same time, as one of...
Page 145 - June, 1838. Having been present at the experiments made at Mr. Cooper's house, with a view of determining the degree of deterioration which the air suffers by the employment of Joyce's stoves in close rooms, and having examined, in conjunction with him, the compositions of the atmosphere under such circumstances, I can, certify that, after burning for twelve hours in a close room of the dimensions above stated, that less than...
Page 449 - The galvanic excitation cannot be confined to the portions of earth situated between the two ends of the wire; on the contrary, it cannot but extend itself indefinitely, and it...
Page 272 - ... mostly from about 20 cubic inches to 14 or 15. Upon turning the steam on, it would again stop, and again be renewed by cooling. Upon closely examining the voltameter upon these occasions, it was found that the current was not wholly stopped, but that there was a small residual action amounting to £ cubic inch per five minutes. These experiments were often repeated with the same general results ; and yet there were times when every care had been taken not to vary any of the circumstances of the...