World’s Strangest

Your source for the strangest things around!

The Physics of Coffee Rings

(YouTube link) This video shows us the strangely fascinating process behind the formation of coffee rings on a surface. As the water evaporates, the solid particles of coffee rush to the edges of the spill. The research was done by the University of Pennsylvania’s Department of Physics and Astronomy. Because we all know that scientists are [...]

Two-Fluid Snap Off

At what point does a drop of fluid pinch off into two droplets? University of Chicago professor of physics Sidney Nagel snapped the photo of such an event: How does one fluid body become two? At what point do the two separate, [...]