Firesideuniversi01mcgo2.jpg
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Summary
| Description |
English:
The transmitter unit (top) would encode the position of a writing pencil as a series of pulsed currents of different levels and polarities, to be transmitted to and reproduced by the receiver (bottom), where a capillary tube ink pen is moved across the paper by electromagnetic clutches and escapements.
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| Date | |
| Source |
https://archive.org/details/firesideuniversi01mcgo/page/n88/mode/1up?view=theater McGovern, John, The fireside university of modern invention, discovery, industry and art for home circle study and entertainment, 1902, Chicago, Union pub. house |
| Author | The Internet Archive |
Licensing
|
This work is in the
public domain
in the
United States
because it was
published
(or registered with the
U.S. Copyright Office
) before January 1, 1929.
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Note: This tag should not be used for sound recordings. |