surface work

https://doi.org/10.1351/goldbook.S06193
@[email protected] is the intensive factor in the differential expression for the work required to increase the area of the @[email protected] Measured under reversible conditions at constant temperature (and normally constant pressure) and referred to unit area, this work, the so-called (differential) surface work, is equal to the static surface tension.
Source:
PAC, 1972, 31, 577. (Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry) on page 597 [Terms] [Paper]