A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 218
uction-pump cannot raise water beyond the extent ofaction of atmospheric pressure, the utmost limit of which will beabout 34 feet; so that the height of the valve D above the level Describe the construction and operation of the common pump. To whom is its invention attributed ? By wbom were… … 216 TNEUMATICS. of the water in the well must never exceed that distance; andunless the pump be accurately constructed, so that the piston inits descent fits close to the bottom of the barrel, so as to form aperfect vacuum in its ascent, the water will not rise to the ex-treme height in the…
Physics
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