# constant of proportionality

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 Noun 1 constant of proportionality - the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionalityfactor of proportionalityconstant - a number representing a quantity assumed to have a fixed value in a specified mathematical context; "the velocity of light is a constant"Planck's constant, h - the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-secondfactor - any of the numbers (or symbols) that form a product when multiplied together
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References in periodicals archive ?
Starting from the statement that the Burgers spacetime dislocation constant [b.sub.0] is equivalent to the Planck length [l.sub.P], we derive the constant of proportionality of (21).
Where D is the total dose, T is treatment time, p is a potency less than 1 (to be determined), and k is the constant of proportionality (an interpretation of which will be presented later in this paper).
We choose the year 2000, the most recent one before the 2001 recession, as a base year, and set the constant of proportionality, c, so that, in each industry, the overhang was equal to zero in that year.
Making use of the constant of proportionality, now called the Hubble Constant, he could also measure the rate of expansion of the Universe, i.e., the average value of velocity of recession divided by distance, now estimated as being about 70 km/s/megaparsec.
[a.sub.ij] = constant of proportionality, depending on the technology of industry j.

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