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Related: the physics of coffee stain rings http://news.discovery.com/tech/coffee-stain-science-smartens-inks-110818.html http://news.discovery.com/tech/coffee-s
by teuobk 14y ago
Related: the physics of coffee stain rings http://news.discovery.com/tech/coffee-stain-science-smartens-inks-110818.html http://news.discovery.com/tech/coffee-stain-science-smartens...