"Section M, N, and O"
Mosley.Rankine. --
Modulus of a system of
logarithms (Math.),
a number by which all the
Napierian logarithms must be multiplied to obtain the logarithms in
another system. --
Modulus of elasticity.
(a) The measure of the elastic force of any
substance, expressed by the ratio of a stress on a given unit of the
substance to the accompanying distortion, or strain.
(b) An expression of the force (usually in terms
of the height in feet or weight in pounds of a column of the same
body) which would be necessary to elongate a prismatic body of a
transverse section equal to a given unit, as a square inch or foot,
to double, or to compress it to half, its original length, were that
degree of elongation or compression possible, or within the limits of
elasticity; -- called also Young's modulus. --
Modulus of rupture,
the measure of the force
necessary to break a given substance across, as a beam, expressed by
eighteen times the load which is required to break a bar of one inch
square, supported flatwise at two points one foot apart, and loaded
in the middle between the points of support.
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