When you stop and think about bubbles, you realize that they're everywhere: in the dishwasher, on the top of your beer, on the crests of waves, in the saliva between your teeth, and, of course, in bubble gun toys.
That means the physics of bubbles are important in all kinds of scenarios. With that in mind, researchers from the Université Paris-Saclay in France have made an intriguing discovery about the film surrounding bubbles.
"Although this effect is often considered in studies devoted to drop evaporation, to the best of our knowledge, the significance of cooling-induced evaporation is not mentioned in the literature on soap films and foams," write the researchers in theirTo get a closer look at these soap films and foams – bubbles, essentially – the team put together a mixture made of washing up liquid, water, and, with variations in the final substance used to fine-tune the lifetime and evaporation rate...
While it was already known that soap films lose liquid via evaporation in an attempt to release energy , it's been assumed that the temperature of these films matched the surrounding environment. One of the ways that this research could be useful is in industrial processes where managing the stability of bubbles is vital. Temperature variations between bubble films and the outside world will affect those calculations.
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