Reference Entry


Donald Fenna

in A Dictionary of Weights, Measures, and Units

Published in print January 2002 | ISBN: 9780198605225
Published online January 2004 | e-ISBN: 9780191726910

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[a quarter of a revolution]

length. A quarter of Earth's circumference, particularly from Equator along a meridian, nominally 10 000 000 m, by the original definition of the metre (6 213.7∼ mi), but actually slightly greater, which is more of a problem to coordinate systems than were it less....

Reference Entry.  63 words. 

Subjects: Numerical and Computational Mathematics

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