Abstract
IF a soap film is formed across a circular aperture in one side of an otherwise closed box, and if then air is introduced into, or removed from, the interior, the surface of the film becomes part of a sphere, and therefore the pressure within the box differs from that outside by a quantity which is directly proportional to the surface tension of the film, and inversely proportional to the radius of the sphere.
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References
See "The Norwegian Aurora Polaris Expedition, 1902–1903," vol. 1, Second Section, Fig. 265A, p. 712. (Longmans, Green and Co., London.)
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MALLOCK, A. Soap Film Pressure Gauge. Nature 123, 17 (1929). https://doi.org/10.1038/123017a0
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DOI: https://doi.org/10.1038/123017a0
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