Something wiggles
A drum skin. A guitar string. Your voice box. A speaker cone. They all shake back and forth. No wiggle, no sound.
Lesson 01
Sound starts with a wiggle
Every sound in the world starts the same way. Something wiggles back and forth, very fast. Put your hand on your throat and hum. Feel it?
Make a prediction
Sound Wave Lab
Which wave do you think is a higher sound — the tight, squeezed one or the wide, stretched one?
The air passes it along
Air is made of tiny bits, far too small to see. The wiggle bumps the closest bits. They bump the next ones. The bump keeps traveling.
Your ears catch the bumps
The bumping air pushes on a tiny skin inside your ear. Your ear sends a message to your brain. Your brain says: that's a drum!
Hear it for yourself.
Everything you just learned happens inside BoomBrix, the speaker that snaps onto your builds.