When you pour cream into a cup of coffee, the viscous liquid seems to lazily disperse throughout the cup. Take a mixing spoon or straw to the cup, though, and the cream and coffee seem to quickly and seamlessly combine into a lighter color and, at least for some, a more enjoyable beverage.
from General Physics News - Science News, Physics News, Physics, Material Sciences, Science https://ift.tt/2TSLXSK
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