Synopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1883 edition. Excerpt: ...machine as with the battery; it may even be affirmed that the industrial generator of the electric light is magnetic action: witness the electric lighting of lighthousej, ships, yards, &c. It was therefore requisite to make the regulator suitable for these two sources of electricity. When the arc that springs between the carbons is derived from the battery, they are consumed in the ratio of i to 2; if, on the other hand, it is derived from the magneto-electric machine, the consumption of both carbons is alike, since the currents are alternating. In the former case it is necessary to arrange the advance of the carbons in the ratio of I to 2, and in the latter to make it equal. An addition to the mechanism enables the change of the relative velocities of the carbons to be made in an instant, according as one or the other source of electricity is made use of. " Thus improved, the new regulator is perfectly adapted to all the applications of the electric light." Serrin's Lamp.--Of all the regulators yet invented, that of Serrin is the one most used when a prolonged illumination is required. We have had the pleasure of following the various phases through which this apparatus has passed since its invention, and we were the first to give a complete account of it in tome IV. of the second edition of our Exposi: des applications de felectridte, published in 1859. At a later period, Pouillet, in a report made to the Academic des Sciences, explained its ingenious arrangements. Finally, the experiments made with the machines of the Alliance Company showed that it was then the only apparatus that could work with currents alternately reversed. Since that period this regulator has been constantly used in the various experiments that have been made with the...
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