比ひ例れい定てい数すう

noun

constant of proportionality; proportionality constant

Mathematical term for the fixed ratio between two directly proportional quantities.

• 比ひ例れい定てい数すうは、y = kx の k にあたる。

  The constant of proportionality corresponds to k in y = kx.

• この実じっ験けんでは、電でん圧あつと電でん流りゅうの比ひ例れい定てい数すうを求もとめる。

  In this experiment, we find the constant of proportionality between voltage and current.