The work required to form unit area of new surface by stretching under equilibrium
conditions. It is numerically equal to the force acting in the j
th direction per unit length of exposed edge, the edge being normal to the i
th direction, that must be applied to a terminating surface to keep it in equilibrium,
th and j
th directions lying in the plane of the surface.
PAC, 1986, 58, 437
(Interphases in systems of conducting phases (Recommendations 1985))
on page 451
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook