Wiedemann's additivity law

Wiedemann's additivity law

[′vēd·ə‚mänz ‚ad·ə′tiv·əd·ē ‚lȯ]
(physical chemistry)
The law that the mass (or specific) magnetic susceptibility of a mixture or solution of components is the sum of the proportionate (by weight fraction) susceptibilities of each component in the mixture.