Your daily light-bulb moment.

Short animated videos on how everyday things work, plus the maths and sources behind each one.

Watch today's video on YouTube (opens in a new tab)Get the weekly email

The Hourwiz logo: a glowing lightbulb whose filament is a W, standing on an H

Curiosity, on repeat.

New videos, each about 30 seconds. Watch on YouTube, Instagram or Facebook, then open the page behind it.

All videos

The science behind the scroll.

Every video has its own page with the maths, the assumptions and the sources, so you can check our work instead of taking our word for it.

Explore the science behind the newest video

Annotated drawing of a ceiling fan A ceiling fan seen from the side. Tilted blades push air down; the air pushes the blades up with an equal force. Blade tiltedto push air down Air pushed down Equal push back up Push down on air, air pushes back up

What we make.

Quick animated answers to things you use every day and things you have always wondered about.

One curious thing. Every week.

The week's videos in one email, with the sources and the maths behind each answer.

Follow along.

A new Short every day on YouTube, Instagram and Facebook. The deep dives are on YouTube.