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Books Books 1 - 10 of 20 on We know that sounds are made by vibrations and are made sensible to the ear by the....  
" We know that sounds are made by vibrations and are made sensible to the ear by the same vibrations, which are reproduced by the intervening medium. But the intensity of the vibrations diminishes very rapidly with the distance, so that even with the aid... "
Edison: His Life and Inventions - Page 171
by Frank Lewis Dyer, Thomas Commerford Martin - 1910
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The Telephone, the Microphone and the Phonograph

comte Th Du Moncel - Microphone - 1879 - 277 pages
...The thing is practicable in this way : " We know that sounds are made by vibrations, and are adapted to the ear by the same vibrations which are reproduced...diminishes very rapidly with the distance : so that it is, even with the aid of speaking-tubes and trumpets, impossible to exceed somewhat narrow limits....
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The great inventions: their history, from the earliest period to the present ...

Franc Bangs Wilkie - Inventions - 1883 - 687 pages
...fact. In this paper, Bourseul said : " We know that sounds are made by vibrations, and are adapted to the ear by the same vibrations which are reproduced...diminishes very rapidly with the distance ; so that it is, even with the aid of speaking-tubes and trumpets, impossible to exceed somewhat narrow limits....
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Bell's electric speaking telephone: its invention, construction, application ...

George Bartlett Prescott - Telephone - 1884 - 526 pages
...conclusions deduced therefrom are as follows : We know that sounds are made by vibration, and are adapted to the ear by the same vibrations which are reproduced...diminishes very rapidly with the distance, so that it is, even with the aid of speaking tubes and trumpets, impossible to exceed somewhat narrow limits....
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The age of electricity: From amber-soul to telephone

Park Benjamin - Electricity - 1886 - 381 pages
...Paris. The thing is practicable in tins way. We know that sounds are made by \ibrations, and are adapted to the ear by the same vibrations which are reproduced by the intervening medinm. But the intensity of the vibrations, diminishes very rapidly with the distance ; so that it...
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United States Reports: Cases Adjudged in the Supreme Court at ..., Volume 126

John Chandler Bancroft Davis, Henry Putzel, Henry C. Lind, Frank D. Wagner - Law reports, digests, etc - 1888
...vibrations, and are made sensible to the ear by the same vibrations, which are Statement of the Case. reproduced by the intervening medium. But the intensity...rapidly with the distance ; so that even with the aid of speaking tubes and trumpets, it is impossible to exceed somewhat narrow limits. Suppose that a man...
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The Transmitted Word

W. J. Keenan, James Riley - Telephone - 1893 - 113 pages
...invention further than in the cardinal. He said, "We know that sounds are made by vibrations, and adapted to the ear by the same vibrations which are reproduced...intervening medium. But the intensity of the vibrations diminish very rapidly with the distance, so that it is, even with the aid of speaking tubes and trumpets,...
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The Minnesota Engineer, Volumes 1-5

Engineering - 1896
...word, if what was spoken in Vienna may not be heard in Paris? The thing is practicable in this way: "We know that sounds are made by vibrations, and are...rapidly with the distance; so that even with the aid of speaking tubes and trumpets, it is impossible to exceed somewhat narrow limits. Suppose that a man...
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Wonders of the Nineteenth Century: A Panoramic Review of the Inventions and ...

John Wesley Hanson - Inventions - 1900 - 641 pages
...to send speech by electricity. He said: "We know that sounds are made by vibrations, and are adapted to the ear by the same vibrations which are reproduced...diminishes very rapidly with the distance, so that it is, even with the aid of speaking tubes and trumpets, impossible to exceed somewhat narrow limits....
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Electricity of to-day: its work & mysteries described in non-technical language

Charles Robert Gibson - Electricity - 1907 - 347 pages
...thing is practicable in this way : We know that sounds are made by vibrations, and are adapted to the ear by the same vibrations which are reproduced by the intervening medium. . . . Suppose that a man speaks near a movable disc, sufficiently flexible to lose none of the vibrations...
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