Explore the physics of two carts with different masses launched by a spring! In this video, we analyze motion, forces, and energy transfer using real-world examples and clear demonstrations. Learn how ...

Weird effect: Have you ever noticed that screwdrivers in your toolbox can seemingly change form? (Courtesy: iStock/M_a_y_a) As a new decade dawns, you will be thrilled to learn that I have come across ...

In the Fall I'll be starting teaching again, after a semester away on sabbatical and then enjoying teaching relief during my first semester at Penn. I'll be teaching a course that I truly love, and ...

Some real-world phenomena look like they break the laws of physics—until you understand what’s actually happening. This video explores five examples that confuse people because they defy everyday ...

During the 2026 Winter Olympics, athletes will leap off ramps, slide across ice and spin through the air. These performances ...