New lesson
Microwave Hot Spots
Why can one bite burn while another stays cold? Compare equal heating times with the dish still and turning.
Originals · Premium edition · Review collection
Change one thing.
Understand something new.
Three new lessons and three rebuilt favourites. Every dial connects a change you make to a result you can see. Explore each scene, change a variable, and compare what happens.
New lesson
Heat Pump
One unit of electricity can deliver several units of heat. Change the temperatures and follow where that energy comes from.
New lesson
Hummingbird Hover
Hold one moment, flip the wing and see why the return stroke can push upwards. Same wingtip path, opposite push.
Rebuilt original
Rolling Shutter Propeller
A bent-looking blade and a blurred blade have different causes. Change the scan and exposure times to separate them.
Compare with the published version ↗
Rebuilt original
Golden Angle Garden
A small turn changes an entire seed head. Build it seed by seed and compare repeating arms with emerging spirals.
Compare with the published version ↗
Rebuilt original
Phantom Traffic Jam
Give the same car the same braking pulse. Change the density and see when a small slowdown becomes a travelling queue.
Compare with the published version ↗