fluid dynamics

The Mystery About The ‘Coffee Ring Effect’ Continues

The Mystery About The ‘Coffee Ring Effect’ Continues

The “coffee ring effect” is that pattern you get when a single liquid evaporates and leaves behind a ring of previously dissolved solids. In the case of coffee, that would be the coffee grounds. A new paper in Physical Review E. demonstrates that we still have a lot to learn…

Why This Drop Of Liquor Looks Like A Galaxy

Why This Drop Of Liquor Looks Like A Galaxy

Anyone who’s imbibed a glass of ouzo — the licorice-flavoured spirit that is practically the national drink of Greece — may be familiar with how it turns cloudy when the liquor is mixed with water. But there are still some mysteries about how such mixed liquids behave.