. The Ontario high school physics. MERCURY AIK-PUMP-BUXSEN JET PUMP 121. 134. Mercury Air-Pump. When the highest possiblevacuum is required, use is made of someform of the mercury air-pump devised bySprengel. The principle of its action maybe understood by reference to Fig. the mercury which is poured into tliereservoir A falls in a broken streamthrough the nozzle N into the tube B, itcarries air with it because each pellet ofmercury acts as an air-tight piston andbears a small portion of air before density of the air in G and R isthus gradually decreased. The mercurywhich overfl
. The Ontario high school physics. MERCURY AIK-PUMP-BUXSEN JET PUMP 121. 134. Mercury Air-Pump. When the highest possiblevacuum is required, use is made of someform of the mercury air-pump devised bySprengel. The principle of its action maybe understood by reference to Fig. the mercury which is poured into tliereservoir A falls in a broken streamthrough the nozzle N into the tube B, itcarries air with it because each pellet ofmercury acts as an air-tight piston andbears a small portion of air before density of the air in G and R isthus gradually decreased. The mercurywhich overflows into D is poured backinto A. A vacuum as high as ,007mm, has been obtained with a mercurypump. It requires a good pump of thevalved type to give an exhaustion of 1 mm. 135. Bunsen Jet Pump. Bunsen devised a simple and con-venient form of pump, which is much used inlaboratories where a moderate exhaustionis required, as for hastening the process offiltration. In this pump (Fig. 151) waterunder a pressure of more than one atmos-phere is forced into a jet throug
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectphysics
