Supplements prior post (for the excessively keen):


DIY piezoelectric material.
Rochelle salt crystals from
- baking soda (Sodium bicarnonate) or Washing soda (Sodium Carbonate)
- and potassium bitartrate (cream of tartar - care - see text)


http://rimstar.org/materials/piezo/how_to_make_rochelle_salt_piezoelectric_=
crystal.htm

DIY video 6m34

      https://www.youtube.com/watch?v=3DE1Ct3VUWvhQ

Growing single crystals

           http://www.seawhy.com/xlone.html

Testing Rochelle salt material for piezoelectric activity

   http://rimstar.org/materials/piezo/rochelle1.htm


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