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Books Books 31 - 31 of 31 on Suppose that a man speaks near a movable disk, sufficiently flexible to lose none....  
" Suppose that a man speaks near a movable disk, sufficiently flexible to lose none of the vibrations of the voice, that this disk alternately makes and breaks the currents from a battery : you may have at a distance another disk, which will simultaneously... "
Edison: His Life and Inventions - Page 171
by Frank Lewis Dyer, Thomas Commerford Martin - 1910
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Media Technology and Society: A History : from the Telegraph to the Internet

Brian Winston - Social Science - 1998 - 374 pages
...practical in this way: We know that sounds are made by vibrations.... Suppose a man speaks near a moveable disk, sufficiently flexible to lose none of the vibrations...voice, that this disk alternately makes and breaks the currents from a battery; you may have at a distance another disk, which PROTOTYPES 1 = Reiss's telephone...
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