Step inside the strange world of a superfluid, a liquid that can flow endlessly without friction, defying the common-sense ...

In this video, we break down the physics behind a tipping or sliding block! Learn how to calculate torque and friction to determine the exact moment when a block will tip or slide. Whether you're ...

Every year, Santa Claus races around the globe in a matter of hours to bring presents to children all over the world.

Understand rotational motion in a clear, intuitive way with a lesson designed to stick with you forever. This video breaks ...

Elysse Bell is a finance and business writer for Investopedia. She writes about small business, personal finance, technology, and more. Erika Rasure is globally-recognized as a leading consumer ...