A method is presented for deriving values of the interfacial tension from the coordinates of any two points (excluding the origin) on the profile of a pendent or sessile interface, including pendent drops or bubbles which do not exhibit an equatorial diameter. The optimum choice of points is described, together with a method for deducing the error in the derived value.
C. J. Lyons, E. Elbing and I. R. Wilson, J. Chem. Soc., Faraday Trans. 2, 1985, 81, 327 DOI: 10.1039/F29858100327
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