Frenkel-Halsey-Hill isotherm equation

Frenkel-Halsey-Hill isotherm equation

[¦freŋk·əl ¦hȯlz·ē ¦hil ′ī·sō‚thərm i‚kwā·zhən]
(physics)
An equation for the volume v of a gas adsorbed on a surface at a given temperature, ln (p / po )= k / v s , where p is the pressure of the gas, po is the vapor pressure, and k and s are constants.