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Why Do Soap Bubbles Have Rainbow Swirls?

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 Physics   |   Science
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Scientists have just found a way to get rid of the swirling rainbows in bubbles, but why is it important? What is the Marangoni effect?

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Stanford engineers stop soap bubbles from swirling
http://news.stanford.edu/2016/09/13/stanford-engineers-stop-soap-bubbles-swirling/
"Engineers happen upon a way to stop the movement of the colorful eddies on the surface of soap bubbles. The results are works of art that could lead to stable engineered foams for medical treatments, personal products and food."

The Marangoni Effect: A Fluid Phenom
http://www.nasa.gov/mission_pages/station/research/news/marangoni.html
"What do a wine glass on Earth and an International Space Station experiment have in common? Well, observing the wine glass would be one of few ways to see and understand the experiment being performed in space."

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