Wright, Mark R., 1854- · London : Longmans · leaf 52
mney.A candle burns brighter if a tube is held over the flame ; the airin the tube becomes heated, rises and a greater amount of freshair feeds the candle; the candle represents the fire, the tube thechimney. If part of the tube be heated, the draught is im-proved ; ventilating shafts have,… … Fig. 30. Fasten the^,ehd of a candle to a plate, and light it. Surroundthe candle with water, and place a lamp-glass over the candle ; 44 Heat although the glass is open at the top the flame is soon extinguished.Repeat the experiment, but introduce in the middle of the glass a cardboard diaphragmA…
Physics
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