ich is perfectly flat.On this plate is placed a large glass vessel. A, called thereceiver, the mouth of which rests on the plate -PQ ; therim of the receiver is ground, and it fits the plate soaccurately that the junction is air-tight, especially as alayer of grease is rubbed on the rim before it… … The manner in wliich tliis is cfrcctcd is obvious from thefi<^uro. Su])pose the piston in the lowest position in thebarrel; then when it is raised,a vacuum tends to form abovea, so that the air of the re-ceiver raises this valve andfdls the barrel at the end ofthe stroke. On the descentof the…
Hydrostatics · Hydrodynamics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
