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Convection of Air Apparatus.

Convection of Air Apparatus.

Convection of Air Apparatus.

Air heated by a candle moves up one chimney while cooler air moves down another to replace the lost air. These currents can be seen against a dark backdrop. Includes: metal box with glass front; two plastic chimneys, candle, and instructions. You need a smoke source.

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612-1240

$38.25

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Air heated by a candle moves up one chimney while cooler air moves down another to replace the lost air. These currents can be seen against a dark backdrop. Includes: metal box with glass front; two plastic chimneys, candle, and instructions. You need a smoke source.

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