Radiometer


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Radiometer
RAD-100

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$8.95 ea.

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$7.95 ea.

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Originally, designed by William Crooke in the 1860's, the radiometer still fascinates both young and old. Whenever light shines on the four diamond shaped vanes the paddle wheel spins at up to 3,000 rpm. Great for illustrating the conversion of light energy into mechanical energy. Each vane is black on one side and white on the other. Because the black surface absorbs energy better than the white reflective side, the molecules of air move faster near the black surface. Molecules of heated air moving faster on one side of the vain than the other cause it to spin. Explanation and suggested experiments included.

Irradiated Antique Bottles

Set of 2 Antique Bottles (one irradiated, one not)

Irradiated Salt (~100 g)

A wonderful, and safe, nuclear chemistry demonstration with many connections to social issues such as the irradiation of food products to preserve them.

Piezo Popper Kit

Igniting two drops of alcohol in the film canister will cause the canister to fly more than 20 feet into the air!

Piezo-electric Igniter

These amazing piezoelectric devices generate a few thousand volt sparks at the touch of a button. No batteries required.