The scale is logarithmic and defined such that each step of one magnitude changes the brightness by a factor of the fifth root of 100, or approximately 2.512.
Asakankin eqal logarithmique əd aliɣi waqalan hak tekelt dak ən magnitude amutayan dǎɣ tanure ən amazan wan racine cinquième wan 100, amosan ihomiši 2,512.