Latte foam: Photo by Piyato via freedigitalphotos.net Engineering Physics 

Science of Sloshing: Why Foam is Important

By Kate Stone Most of us know that carrying a full cup of hot coffee can be precarious and just one wrong move could send a wave of java sloshing over the rim. But have you ever noticed that adding a bit of foam to the top of the coffee makes moving with it easier? Scientists have found out why just a few layers of bubbles can significantly dampen the sloshing motion of liquid. However, investigating the effects of foam on fluid dynamics is about more than avoiding coffee spillage.…

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