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!!!!1825 __ Electrical Disturbances on Telegraph Lines * ''Comment :'' It finds confirmation also in the fact, generally admitted by the inhabitants of the northern regions, that, when the auroræ appear low, a crackling is heard similar to that of the electric spark. ^[...^] M. Ramm, Inspector of Forests in Norway, wrote to M. Hansteen, in 1825, that he had heard the noise, which always coincided with the appearance of the luminous jets, when, being only ten years old, he was crossing a meadow covered with snow and hoar-frost, near which no forests were in existence. ^[...^] Dr. Gisler adds, that he has frequently hear the noise of the aurora, and that it resembles that of a strong wind, or the hissing that certain chemical substances produce in the act of decomposition. ''(George B. Prescott, 1860)'' * ''Comment :'' Professor Pierce has observed the most curious sounds produced from a telephone in connexion with a telegraph wire during the Aurora Borealis, and I have just heard of a curious phenomenon lately observed by Dr. Channing. In the city of Providence, Rhode Island, there is an overhouse wire about one mile in extent with a telephone at either end. On one occasion the sounds of music and singing was faintly audible in one of the telephones. It seemed as if some one was practicing vocal music with a pianoforte accompaniment. The natural suppositions was that experiments were being made with the telephone at the other end of the circuit, but upon inquiry this proved not to have been the case. Attention having thus been directed to the phenomenon, a watch was kept upon the instruments, and upon a subsequent occasion the same fact was observed at both ends of the line by Dr. Channing and his friends. It was prove that the sounds continued for about two hours, and usually commenced about the same time. A searching examination of the line disclosed nothing abnormal in its condition, and I am unable to give you any explanation of this curious phenomenon. Dr. Channing has, however, addressed a letter upon the subject to the editor of one of the Providence papers, giving the names of such songs as were recognized, with full details of the observations, in the hope that publicity may lead to the discovery of the performer, and thus afford a solution of the mystery. ''(George B. Prescott, 1884)'' * ''Attached references :'' {small}Carlo Matteuci (1811-1868), ''observations'' (1848) ; Thomas A. Watson (1854-1934), ''Static currents'' (1876).{/small} * ''Sources :'' {small}G. B. Prescott. (1884). ''Bell’s electric speaking telephone : its invention, construction, application, modification, and history''. In ‘HISTORY, THEORY, AND PRACTICE OF THE ELECTRIC TELEGRAPH’. pp. 79-80. D. Appleton. Reprinted by Arno Press 1972 ; G. B. Prescott. (1860). ''Electrical Disturbances on Telegraph Lines''. In ‘HISTORY, THEORY, AND PRACTICE OF THE ELECTRIC TELEGRAPH’. pp. 317-332. Boston: Ticknor and Fields, University Press, Cambridge ; Alfred Angot. (1897). The Aurora Borealis. International Scientific Series, Vol. LXXVII. pp. 46-51. New York : D. Appleton & Co ; J.R. Capron. (1879). Auroræ : their characters and spectra. E. & F.N. Spon.{/small} {br}{br}
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