1. Scientists Crack The Physics Of Coffee Rings : 
Scientists now know why coffee rings have dark, well-defined edges, as  seen in the image above. The research finding may have implications on  the development of inks and paints.

    Scientists Crack The Physics Of Coffee Rings :

    Scientists now know why coffee rings have dark, well-defined edges, as seen in the image above. The research finding may have implications on the development of inks and paints.