Experimental Researches in Electricity, Volume 1 eBook

This eBook from the Gutenberg Project consists of approximately 678 pages of information about Experimental Researches in Electricity, Volume 1.

1748.  It would be easy, on the same view, to explain hypothetically, how, if one of the rubbing bodies be a conductor, as the amalgam of an electrical machine, the state of the other when it comes from under the friction is (as a mass) exalted; but it would be folly to go far into such speculation before that already advanced has been confirmed or corrected by fit experimental evidence.  I do not wish it to be supposed that I think all excitement by friction is of this kind; on the contrary, certain experiments lead me to believe, that in many cases, and perhaps in all, effects of a thermo-electric nature conduce to the ultimate effect; and there are very probably other causes of electric disturbance influential at the same time, which we have not as yet distinguished.

Royal Institution.  June, 1838.

INDEX.

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N.B.  A dash rule represents the italics immediately preceding it.  The references are sometimes to the individual paragraph, and sometimes to that in conjunction with those which follow.

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Absolute charge of matter, 1169. ——­ quantity of electricity in matter, 852, 861, 873.  Acetate of potassa, its electrolysis, 749.  Acetates, their electrolysis, 774.  Acetic acid, its electrolysis, 773. Acid, nitric, formed in air by a spark, 324. ——­, or alkali, alike in exciting the pile, 932. ——­, transference of, 525. ——­ for battery, its nature and strength, 1128, 1137. ——­ ——­, nitric, the best, 1138. ——­ ——­, effect of different strengths, 1139. ——­ in voltaic pile, does not evolve the electricity, 925, 933. ——­ ——­, its use, 925.  Acids and bases, their relation in the voltaic pile, 927, 933.  Active battery, general remarks on, 1034, 1136.  Adhesion of fluids to metals, 1038.  Advantages of a new voltaic battery, 1132. Affinities, chemical, opposed voltaically, 891, 904, 910. ——­, their relation in the active pile, 949. Air, its attraction by surfaces, 622. ——­, charge of, 1173. ——­, ——­, by brush, 1434, 1441. ——­, ——­, by glow, 1537, 1543. ——­, convective currents in, 1572, 1576, 1581. ——­, dark discharge in, 1548. ——­, disruptive discharge in, 1359, 1406, 1425, 1526. ——­, induction in, 1208, 1215, 1284, 1362. ——­, its insulating and conducting power, 411, 1332, 1336, 1362. ——­, its rarefaction facilitates discharge, 1375. ——­, electrified, 1443. ——­, electro-chemical decompositions in, 454, 1623. ——­, hot, discharges voltaic battery, 271, 274. ——­, poles of, 455, 461, 559. ——­, positive and negative brush in, 1467, 1472, 1476. ——­, ——­ glow in, 1526, 1530. ——­, ——­ spark in, 1485. ——­, rarefied, brush in, 1451, 1456. ——­, retention of electricity on conductors by, 1377, 1398. ——­, specific inductive capacity of, 1284. ——­, ——­, not varied by temperature or pressure, 1287, 1288. Alkali has strong exciting power in voltaic

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