. Scientific American Volume 03 Number 17 (October 1860). BBKLT At No. 37 Park-row (Park Buildina). New York. O. D. MUNN, S. H. WALES, A B. BEACH. TERMS—Tiro Dollsn per uiim-One Dollar is adranee, andtheremainder in six months. 8ingle copies of the paper are on sale at the office of publication,and at all the periodical stores in the United States and Canada. Sampson Low, 800 ft Co., the American Booksell ers, No. 47 LudgateHill, London, England, are the British Agents to receive snbscnp-tiona for the Scientific Amkbigan. tw See Prospectus on last page. No Traveling Agents employed. Vol. III.,
. Scientific American Volume 03 Number 17 (October 1860). BBKLT At No. 37 Park-row (Park Buildina). New York. O. D. MUNN, S. H. WALES, A B. BEACH. TERMS—Tiro Dollsn per uiim-One Dollar is adranee, andtheremainder in six months. 8ingle copies of the paper are on sale at the office of publication,and at all the periodical stores in the United States and Canada. Sampson Low, 800 ft Co., the American Booksell ers, No. 47 LudgateHill, London, England, are the British Agents to receive snbscnp-tiona for the Scientific Amkbigan. tw See Prospectus on last page. No Traveling Agents employed. Vol. III., No. [New Sebies.]....Sixteenth Year. NEW YORK, SATURDAY, OCTOBER 20, 1860. ABE GRAVITY AND ELECTRICITY THESAME THING? HERE is no question oc-cupying more attentionamong the highest orderof intellects than thequestion of the identityof the several invisibleforces of nature. The re-lations of magnetism, elec-tricity, chemical affinity,heat and light, are certain-ly very close and verycomplicated Each oneof producing either ormay also all generate. ofnil these forces is capableof the others. Theymechanical power, and mechanical power, on theother hand, may generate all of these forces. Per-haps as good an illustration of this as any is to be foundin the electric light invented by Professor Way, of Lon-don, which we described last week. First, the me-chanical power of a steam engine turns a wheel whichcarries a number of permanent magnets&t its periphery ;these magnets, as they are carried past the ends of softiron cores which hare insulated wires wound aroundthem in helical form, cause waves of electricity to flashthrough the helical wires, the electricity, darting alongfrom drop to drop of an exceedingly slender stream offlowing mercury, produces an intense light; it alsogenerates heat, by which the mercury is whence comes the mechanical power of the steamengine? That results from the expansion of steamcaused by heat, and the heat is produced by the com-bu
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