Research carried out at the University of Pennsylvania has definitively measured and described the Brownian motion of an isolated ellipsoidal particle, completing a path laid out by Einstein 100 years ...

Using centuries old equations of fluid motion, supercomputers can be used to simulate turbulent flow in fine detail. But theoretical physicists are still unsure as to how these equations actually work ...

This schematic shows the rotational motion of a specific water molecule. At equilibrium, on average, the energy associated with rotational motion must equal the energy associated with the translation ...

A spinning basketball hurtles from the top of a dam, turning a simple ball into a high-speed physics experiment. As it falls, rotational motion interacts with gravity, air resistance, and impact ...