Detection of Boundary Films

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Science  16 Dec 1960:
Vol. 132, Issue 3442, pp. 1838
DOI: 10.1126/science.132.3442.1838


Results, obtained with a photoelectric refractometer and sucrose solutions, indicate that a concentrated surface layer rapidly builds up when sucrose solutions are allowed to stand under conditions where evaporation can occur from the surface. The phenomenon is similar to the formation of a cool boundary film which has recently been shown to occur on the surface of the ocean.