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loss of isochronism in a pendulum moving through circular arcs of different sizes: sometimes avoided by causing the pendulum to move through cycloidal arcs.
error measured as the distance from the center of a target to the point of impact of a bomb or shell, or to the ground zero of an aerial burst.
Based on the Random House Dictionary, © Random House, Inc. 2014.
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An error the breadth of a single hair can lead one a thousand miles astray.
An error is the more dangerous in proportion to the degree of truth which it contains.
Mistakes are made on two counts: an argument is either based on error or incorrectly developed.