Controls

`Space`	Snap — summon / dissolve
`F` / `O`	Fist (form) / Open hand (release)
`V` `→` `←`	Next / previous model
`E` `↑` `↓` wheel	Exploded view (engines & car)
twist hand	Rotate the model (raise / lower = tilt) · `G` on/off
☝ point · 🤏 pinch	Pick a part (or click it) · pull it out
🙌 two hands	Zoom (also `+` `-` `0`, ctrl + wheel)
`X` `,` `.`	Cut-away slice (move hand / mouse)
`Q` `M` `K` `I`	Quiz · voice · record video · describe part
drag	Rotate the model
`R` `L` `T`	Auto-rotate · labels · trails
`C` `D` `H`	Camera · demo · this help

VIDEO EXPORT

Choose video format

Select a format before recording starts.

Explore 34 interactive models made of light. Move your hand to reveal how vehicles, machines and the world around you work.

Snap your fingers to summon the particles.
Make a fist to form a wonder, engine or car.
Open your hand: wonders morph to the next one — organs, engines and the car explode to show every part inside, named with what it does. Close your hand to put it back together.
Twist your hand to turn the model, raise or lower it to tilt; two hands zoom.
Point ☝ at a part to learn what it does, pinch 🤏 to pull it out. Try the 🎓 quiz, 🎤 voice, ✂ cut-away and ⏺ recording.
Show ✌ to jump to the next model.