Category: Dot Physics

Let's calculate how much energy your LEDs suck up relative to old-school incandescents.

Thermoelectric generators with no moving parts are small and reliable—which makes them perfect for spacecraft like Voyager and Cassini.

This crazy parkour move, where a guy bounds up between two walls by jumping from one to the other, is based on the momentum principle and friction.

The spring inside a clicky pen is a perfect way to learn about projectile motion.

There’s no fooling gravity—but this trick makes it look like you can.

Frame-by-frame video analysis shows an illegal forward pass—but in the reference frame of the QB, it's backward.

In normal water, a human just barely floats. But the *Stranger Things* kids know a workaround.

You can use angular momentum to describe everything from fidget spinners to back flips to interstellar asteroids. Let's see how it works.

We're not saying this interstellar object is a spaceship. But it sure would make for some cool physics.

Really, Thanksgiving is all about thermal transfer.