Abstract
WHILE investigating the phenomenon of the surface tension of different dilutions of Boys's soap solutions (2.5 per cent sodium oleate and 25 per cent glycerine in water) I found that, whenever the solution was exposed to light, there was an abrupt but small fall of surface tension of the solution; but when the solution was kept in a cool, dark room, this abrupt change was not noticed during the experiment, if all the other conditions remain the same.1
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References
L. D. Mahajan, "The Surface Tension of Different Dilutions of Boys's Soap-Solution", Phil. Map., in press.
Du Nouy, P. L., "Surface Tensions of Colloidal Solutions and Dimensions of certain Organic Molecules", Phil. Mag., vol. 48. August 1924, p. 264.
Warren, E. L., "Surface-tension Balance", Phil. Mag., No. 27, August 1927.
"Properties of Matter", by Poynting and Thomson, p. 161.
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MAHAJAN, L. Effect of Light on the Surface Tension of Boys's Soap Solutions. Nature 128, 496 (1931). https://doi.org/10.1038/128496a0
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DOI: https://doi.org/10.1038/128496a0
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