News tagged with surface tension

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The physics of coffee rings

For centuries, intellectuals have met at the ring-stained surfaces of coffee shops to pore over the most pressing problems of the day -- but has anyone ever pondered the coffee rings they left behind? What causes the formation ...

Nov 24, 2010 4.5 / 5 (2) 1 | with audio podcast

Ironing out the causes of wrinkles

As a sign of aging or in a suit, wrinkles are almost never welcome, but two papers in the current issue of Physical Review Letters offer some perspective on what determines their size and shape in soft materi ...

Jul 15, 2010 3.8 / 5 (6) 0 | with audio podcast