PROPORTIONALITY • DICTIONARY ONE.COM • Definition of Proportionality

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/prəpˌɔrʃənˈælɪti/ Listen

Proportionality

noun

A ratio of two quantities that is constant.

Harmonious arrangement or relation of parts or elements within a whole (as in a design). Synonyms: balance, proportion.

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constant of proportionality

factor of proportionality

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"Proportionality" Quotes from Famous Books

... distance from the line of the sun's direct light, it would have been hopeless to attempt to remedy chromatic aberration. Newton took it for granted that this was so. But the experiments of Hall and the Dollonds showed that there is no such strict proportionality between the dispersive and refractive powers of different kinds of glass. It accordingly becomes possible to correct the chromatic aberration of one glass ...

— Half-hours with the Telescope - Being a Popular Guide to the Use of the Telescope as a - Means of Amusement and Instruction. • Richard A. Proctor

... imperfections, and thus to satisfy ourselves that threads made of quartz are not things standing apart from all other materials, except in the sense that the limits within which they may be twisted without deviating in their behaviour from the law of strict proportionality by more than some unassigned small quantity, are ...

— On Laboratory Arts • Richard Threlfall

... and give, as it were, a substratum of permanence, of identity, and therefore of reality, to the shadowy flux of Time. It is Eternity revealing itself in the phaenomena of Time: and the perception and acknowledgment of the proportionality and appropriateness of the Present to the Past, prove to the afflicted Soul, that it has not yet been deprived of the sight of God, that it can still recognise the effective presence of a Father, though through a darkened glass and a turbid ...

— Biographia Literaria • Samuel Taylor Coleridge

... Euclid, what numbers are proportionals, namely, from the nature and property of proportion it follows that the product of the first and fourth will be equal to the product of the second and third: still they do not see the adequate proportionality of the given numbers, or, if they do see it, they see it not by virtue of Euclid's proposition, but intuitively, without going ...

— On the Improvement of the Understanding • Baruch Spinoza [Benedict de Spinoza]

... how well this conception falls in with the law of proportionality discovered by Newton. When the thickness of the film is 2 d, the particle has time to perform, two complete rotations within the film; when the thickness is 3 d, three complete rotations; when 10 d, ten complete rotations are performed. It is manifest that ...

— Six Lectures on Light - Delivered In The United States In 1872-1873 • John Tyndall