How gravity causes a perfectly spherical ball to roll down an inclined plane is part of elementary school physics canon. But the world is messier than a textbook. Scientists have sought to ...

How gravity causes a perfectly spherical ball to roll down an inclined plane is part of the elementary school physics canon. But the world is messier than a textbook. Scientists in the Harvard John A.

All the Latest Game Footage and Images from Physics! Fun Create physics experiments with a wide variety of tools, from simple objects and particles to ragdolls and complex mechanical vehicles. With ...