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| Physics of Coffee Stains Explained Posted: 18 Aug 2011 10:00 AM PDT Coffee stains may seem mundane, but they are actually an interesting quirk of physics. |
| Coffee stain rings: So here’s what causes them Posted: 18 Aug 2011 10:00 AM PDT Coffee stains may seem mundane, but they are actually an interesting quirk of physics. Now researchers have discovered a surprising twist that changes our understanding of how these stains form. |
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