Eunice Millán prepares to measure the force of friction in a physics lab at Woodrow Wilson High School in Camden, New Jersey, which requires all students to take physics to graduate. (Tara García ...

“This project started with a simple question: why do basketball shoes squeak?” Adel Djellouli, a study co-author and ...

Basketball shoes on a gym floor, bicycle brakes in need of a tune-up, or the squeal of tires are everyday examples of squeaking sounds. Such sounds have long been attributed to stick-slip friction, or ...

It all happens in a snap. New high-speed video exposes the blink-and-you’ll-miss-it physics behind snapping your fingers. The footage reveals the extreme speed at which the gesture occurs, and shows ...