Soret phenomenon

So·ret phe·nom·e·non

(sō-rā'),
in a solution kept in a long, upright tube at room temperature, the upper part, being warmer, is also more concentrated.

So·ret phe·nom·e·non

(sō-rā' fĕ-nom'ĕ-non)
In a solution kept in a long, upright tube at room temperature, the upper part, being the warmer, is also the more concentrated.

Soret,

Charles, French radiologist, 1854-1931.
Soret band - the absorption band of all porphyrins at about 400 nm.
Soret phenomenon - in a solution kept in a long, upright tube at room temperature, the upper part being the warmer, is also the more concentrated.