Lynde, Carleton John, b. 1872 · New York : Macmillan · leaf 84
s produced. It is pro-duced either by an air pump, by a fan, or by a centrifugal fan. The air pumphas been de-scribed above.The fan is similarto the ordinaryelectric fan usedfor stirring theair in a room.The air is drivenin a direction atright angles to theplane in whichthe fan blades aremoving.… … j^ I rFn i^Tsj^ix- leantniiChamber yOrffnters Here. ^■ Fig. si. — Vacuum cleaner with motor-drivencentrifugal fan. 7° PHYSICS OF THE HOUSEHOLD
Physics · Home Economics
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