television
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Written by:
Michael R
Date added:
July 27, 2012
Level:
Grade:
A
No of pages / words:
5 / 1343
Was viewed:
7330 times
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Essay content:
Bell's photophone used light to transmit sound and he wanted to advance his device for image sending. George Carey builds a rudimentary system with light-sensitive cells.
1881: Sheldon Bidwell experiments with telephotography, another photophone.
1884: Paul Nipkow sends images over wires using a rotating metal disk technology calling it the "electric telescope" with 18 lines of resolution...
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Bell's photophone used light to transmit sound and he wanted to advance his device for image sending. George Carey builds a rudimentary system with light-sensitive cells.
1881: Sheldon Bidwell experiments with telephotography, another photophone.
1884: Paul Nipkow sends images over wires using a rotating metal disk technology calling it the "electric telescope" with 18 lines of resolution...
displayed 300 characters
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