Piezoelectric Rocks
Rub them together & generate a piezoelectric sensation!

These naturally occurring minerals demonstrate piezoelectricity when rubbed together briskly. Just turn down the lights and watch the sparks fly! DO NOT STRIKE the rocks together. Hold them together very firmly and rub back and forth quickly. VERY COOL!!

The piezoelectric effect is the quantum process where a material subjected to an electric voltage will change size or move. Alternately, the same material will generate an electric voltage when stressed or deformed. The piezoelectric effect is used for battery-less electric ignition of gas heaters and lighters, and lets us keep accurate time with quartz watches (fact filled pamphlet included!).

We will send you one pair of factory-packaged Piezoelectric Quartz Rocks.

CAUTION: Be careful to keep the rocks away from your eyes when rubbing them together, as small bits of rock may fly off.

List Price:$4.95
Pow!Price: $3.79

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