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telegraph key

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Noun1.telegraph key - key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closedtelegraph key - key consisting of a lever that sends a telegraph signal when it is depressed and the circuit is closed
key - a lever (as in a keyboard) that actuates a mechanism when depressed
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Hawking, who is paralyzed but speaks electronically by tapping out words on a telegraph key, said that even in light of the new calculations, there is no ``generic'' way in which naked singularities might form according to the known laws of physics.
HAWKING ATTRIBUTES LOST WAGER TO `TECHNICALITY' ON COSMIC SCALE by Daily News (Los Angeles, CA)
At age 16, he learned how to use a telegraph key - sending and receiving with Morse code - and was hired as an operator at a succession of stations, mostly in the Midwest.
Thomas Alva Edison after forty: the challenge of success by Finn, Bernard D. / USA Today (Magazine)
During two trials, volunteers tapped a telegraph key as quickly as possible, alternating right and left index fingers.
Left brain may serve as language director by Bower, Bruce / Science News
 
 
 
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