<a href="http://www.youtube.com/watch?v=6sonpvUxGL8&search=resonence" target="new"><img alt="salt-sound.jpg" src="http://www.strangeattractor.co.uk/further/archives/salt-sound.jpg" width="300" height="222" /></a>

Amazing video footage of soundwaves transformed into visual patterns, simply by pouring salt onto a plate above the speaker cone. Beautiful!

And check out the crumpling chinook on the same page!

Thanks John Lundberg.