Jurin

Jurin is a surname of European origin and may refer to individuals bearing the name as well as to concepts named after a scientist with that surname. In historical and genealogical records, Jurin appears in various regions, reflecting its use as a family name across centuries. In science, the term Jurin commonly appears in reference to Jurin's law, a principle in capillary action.

Jurin's law describes the rise of a liquid in a narrow tube due to capillarity. In its standard form, the equilibrium height h of the liquid column in a tube of radius r is given by h = 2γ cos θ / (ρ g r), where γ is the liquid’s surface tension, θ is the contact angle between the liquid and the tube, ρ is the liquid density, and g is the acceleration due to gravity. The law highlights how surface tension, liquid properties, and tube geometry drive capillary rise. It assumes a clean, vertical tube, static equilibrium, and negligible evaporation. Jurin's law serves as a foundational concept in teaching surface phenomena and has practical applications in microfluidics, soils science, and materials testing, where capillary effects influence fluid behavior.

Beyond science, Jurin as a surname may appear in biographical or historical contexts, often without implication beyond genealogical reference. The term is most widely encountered in discussions of capillarity and interfacial phenomena through Jurin's law.