Soap film, formed by dipping a loop of thermocouple wire in a water-glycerol-soap solution, is found to cool down by as much as 8 degrees Celsius as its water evaporates. Selected for a Synopsis in Physics.

From the article:

Measurement of the Temperature Decrease in Evaporating Soap Films
François Boulogne, Frédéric Restagno, and Emmanuelle Rio
Phys. Rev. Lett. 129, 268001 (2022)

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