Collin's Lab: Homebrew Piezo

Piezoelectric materials are about as close to magic as you can get. They turn physical pressure into electricity and can even turn electricity into physical pressure - an amazing sort of bidirectional converter for mechanical and electrical energies. Perhaps even more amazing is the fact that you can easily 'grow' your own piezoelectric crystals overnight using just a couple of common ingredients - awesome.

Learn more here:
http://makezine.com/video/collins-lab-homebrew-piezo/

Видео Collin's Lab: Homebrew Piezo канала Make: