Elementary Treatise On Natural Philosophy volume 2
Elementary Treatise On Natural Philosophy volume 2
A Augustin Privat Deschanel
The book Elementary Treatise On Natural Philosophy volume 2 was written by author A Augustin Privat Deschanel Here you can read free online of Elementary Treatise On Natural Philosophy volume 2 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Elementary Treatise On Natural Philosophy volume 2 a good or bad book?
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The thermo-pile, invented by Nobili, and improved by Melloni, consists essentially of a chain (Fig. 297) formed of alternate elements of bismuth and antimony. If the ends of the chain be connected by a wire, and the alternate joints slightly heated, a thermo-electric current will be produced, as will be explained hereafter. The amount of current increases with the num- ber of elements, and with the difference of temperatures of the oppo- site junctions. In the pile as improved by Melloni, the e...lements are arranged side by side so as to form a square bundle (Fig. 298), whose opposite ends consist of the alternate junctions. The whole is contained in a copper case, with covers at the two ends, which can be removed when it is desired to expose the faces of the pile to the action of heat. Two metallic rods connect the terminals of the thermo-electric series Fig. 297. Nobili's Thermo-electric Series. THERMO-MULTIPLIER. 441 with wires leading to a galvanometer, 1 so that the existence of any current will immediately be indicated by the deflection of the needle.
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