Abstract
Recent advances have demonstrated that evaporation can play a significant role on soap film stability, which is a key concern in many industrial areas but also for children playing with bubbles. Thus, evaporation leads to a film thinning but also to a film cooling, which has been overlooked for soapy objects. Here, we study the temperature variation of an evaporating soap film for different values of relative humidity and glycerol concentrations. We evidence that the temperature of soap films can decrease after their creation up to . We propose a model describing the temperature drop of soap films after their formation that is in quantitative agreement with our experiments. We emphasize that this cooling effect is significant and must be carefully considered in future studies on the dynamics of soap films.
- Received 5 May 2022
- Revised 29 September 2022
- Accepted 3 November 2022
DOI:https://doi.org/10.1103/PhysRevLett.129.268001
© 2022 American Physical Society
Physics Subject Headings (PhySH)
synopsis
synopsisBubbles Have an Unexpected Chill
Published 19 December 2022
The film surrounding a soap bubble can be up to 8 °C cooler than the environment, a finding that has implications for bubble stability.
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