I learned to respect friction, as a phenomenon with many nuances, when I was a graduate student. One day, while teaching a problem session in elementary mechanics, I unwisely invented a new ...

In physics, the conundrum known as the 'few-body problem,' how three or more interacting particles behave, has bedeviled scientists for centuries. Equations that describe the physics of few-body ...

Through Search and Lens, users may solve problems centering on geometry, trigonometry, physics, and calculus, with its equation available for every prompt.

A new theory proposes six new types of particles and could solve some of the biggest problems in physics.