Spin a coin on a tabletop. As it loses energy and tips toward the surface, the coin begins to roll on its rim, wobbling faster and faster and faster. Toward the end, the coin generates a ...

Scientists at Purdue University have made the fastest spinning object ever, a tiny ball of silicon dioxide that rotates 300 billion times per second. They positioned the microscopic silica balls in a ...

A BALL spinning in a vacuum should never slow down, since no outside forces are acting on it. At least that’s what Newton would have said. But what if the vacuum itself creates a type of friction that ...