Jurin's law

Jurin's law describes the rise and fall of a liquid within a thin capillary tube. Named after its discoverer James Jurin.

This law is expressed as:

$\qquad h={\frac {2\gamma \cos \theta }{r\rho g}}$ $\qquad h={\frac {2\gamma \cos \theta }{r\rho g}}$

where

This law is valid if the tube radius is smaller than the capillary length.