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Flash Rocks Piezo Electrical Rocks
Brought to you by OnlineScienceMall
Our Price: $
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 Piezo Rocks
   by Copernicus Toys
 
   Piezoelectricity ROCKS!
Piezo electric field in action: knock them together for an electrical effect.
Flash rocks- aka quartz - are one of the few minerals with piezoelectric properties. So when subjected to mechanical stress, these two little rocks generate an electrical charge.
 
Poly-bagged.
Ages 8 years and above.
Not for children under 3 years: small parts: choking hazard.
Made in USA
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