Scientists Crack The Physics Of Coffee Rings

Why do drops of coffee dry as a clear blob with a dark ring around the edge? Researchers say it has to do with the shape of particles in the liquid. But the new study's implications go far beyond your morning joe.

Source: http://www.npr.org/2011/08/17/139681851/scientists-crack-the-physics-of-coffee-rings?ft=1&f=1007

Lauren Bush Lauren Conrad Lauren German LeAnn Rimes Leeann Tweeden