Analysis of information sources in references of the Wikipedia article "Shake (unit)" in English language version.
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I'll be back in a couple of shakes.Also on page 212 ("A Row in an Omnibus") "in a brace of shakes" and on page 247 ("The Lay of St. Alois") "in a couple of shakes". But the phrase appeared in print before Barham; see for example James Edward Alexander (1833). Transatlantic Sketches. p. 284.
The period, 10−8 seconds, turns out to be a convenient unit of time, and it was defined during the Manhattan Project as one 'shake'.
The period, 10−8 seconds, turns out to be a convenient unit of time, and it was defined during the Manhattan Project as one 'shake'.