Physics you can see.
Small, honest experiments for concepts that are usually hidden inside numbers. Each page starts with one question, then lets you move the quantities yourself.
Featured
Five to start with
All pages
Twelve pages
Everything built so far, coloured by category. Shuffle the order if you would rather stumble into something than go looking for it.
12 pages
What's next
More equations, waiting their turn.
The next batch is all kitchen-table science — grab something from around the house, take a real measurement, and check it against the equation.
Everyday maths
- Why the spoon feels colder than the table — both are room temperature, but touch metal and wood and your hand disagreese = √(kρc)idea
- How deep is the well — drop a stone, count the seconds to the splash, and back out the depthd = ½gt²idea
Fun physics
- Melting ice doesn't raise the glass — float an ice cube in a full glass, mark the waterline, and watch it not moveρiceVice = ρwaterVdispidea
Every visual is self-contained, approximate only where stated, and designed to be played with. Each page is a single HTML file with no build step and no external dependencies — open one directly in a browser and it works.