US$19.95

Convection in Air Apparatus
[15055]

Also known as "Ventilation Apparatus", this apparatus demonstrates the convection currents in air. Comprises a sheet metal box with open sliding glass front and two circular openings at the top for mounting glass chimneys. On the inner side, below each chimney, a candle holder is mounted. Air heated by a candle placed beneath one of the chimneys with glass door closed, causes the flow of convection currents, which can be observed by bringing a smoldering string near the top of other unheated chimney. Supplied without candles
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