Where \ gamma _ { \ text { s-g } } is the interfacial energy between the solid and gas phases, \ gamma _ { \ text { s-l } } the interfacial energy between the substrate and the liquid, \ gamma _ { \ text { l-g } } is the interfacial energy between the liquid and gas phases, and \ theta is the contact angle between the solid-gas and the solid-liquid interface.
22.
Where \ gamma _ { \ text { s-g } } is the interfacial energy between the solid and gas phases, \ gamma _ { \ text { s-l } } the interfacial energy between the substrate and the liquid, \ gamma _ { \ text { l-g } } is the interfacial energy between the liquid and gas phases, and \ theta is the contact angle between the solid-gas and the solid-liquid interface.
