Definition of Modulos
||Mod"u*lus (?), n.; pl.
Moduli (#). [L., a small measure. See
Module, n.] (Math., Mech., & Physics)
A quantity or coefficient, or constant, which expresses the
measure of some specified force, property, or quality, as of
elasticity, strength, efficiency, etc.; a parameter.
Modulus of a machine, a formula expressing
the work which a given machine can perform under the conditions
involved in its construction; the relation between the work done upon
a machine by the moving power, and that yielded at the working
points, either constantly, if its motion be uniform, or in the
interval of time which it occupies in passing from any given velocity
to the same velocity again, if its motion be variable; -- called also
the efficiency of the machine. 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. Rankine.
- Webster's Unabridged Dictionary (1913)
- (Mathematics) The base with respect to which a congruence is computed.
- (Mathematics) The absolute value of a complex number
- (Physics) A coefficient that expresses how much of a certain property is posessed by a certain substance.
- The Nuttall Encyclopedia
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