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==Demo archive== | ==Demo archive== | ||
=== Ripple Tank === | |||
* http://en.wikipedia.org/wiki/Ripple_tank | |||
* "long tank of water, with a bit of board in one end, generally hinged on the bottom. Move it back and forth to create waves" | |||
* "washing up bowl with a white bottom, attach a rod with a ball on the end to the speaker cone and lower it into the middle" | |||
* perspex will be too expensive for a large tank | |||
* could we drive this with a speaker & low frequencies? | |||
=== Wine Glasses: Pitch === | === Wine Glasses: Pitch === |