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2014-02-24 23:04:49

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In 1909, an Iranian telegraph operator living in the remote desert town of Kerman noticed an unusual movement of the magnetic needle of his telegraph instrument.

2013-06-03 23:23:40

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25_64652cdf870881e14485d7539934c5d2
2010-10-21 17:34:41

Morse code is a form of textual transmission as a series of on-off tones, lights, or clicks that are interpreted by a skilled listener. International Morse Code encodes the Roman alphabet, Arabic numerals, and a small set of punctuation as standardized sequences of short and long "dots" and "dashes". Since many non-English languages have more than 26 letters there are extensions to the Morse alphabet. The speed of Morse code is measure in WPM. A dot is one "on" element followed by an off...

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Word of the Day
pawl
  • A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.
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