RSS
Piezoelectric crystals are fascinating - when physical stress is applied, these materials produce a voltage. The effect can be reversed as well, apply electricity, produce a stress/vibration. Rochelle salt(potassium sodium tartrate) is an easily synthesized piezoelectric substance you can make with readily available items -
- 500 g (1 lb) of baking soda (sodium bicarbonate)[NaHCO3]
- 200 g (7 oz) of cream of tartar (potassium bitartrate)[KHC4H4O6] [see note below]
- Oven
- Pyrex container
- Jar with lid
- 500 mL (2 cup) glass beaker or Pyrex measuring cup
- Sauce pan with water
- 2 mL (1/2 tsp) measuring spoon
- Spoon for stirring
- Coffee Filter
- Filter paper or paper towelling
What would be the best(feasible) angle of contact with Rochelle Salt? Could you cut out a wafer containing one natural crystal face?
Since it's water-soluble you can create a specialized band-saw with a thread circulating underwater, and polish any surface against a piece of wet glass or plastic.
Reply to this comment