Twisden, John Francis · London, Longmans, Green, and Co. · leaf 251
ps its valve closed, and a vacuum would be formed below the piston were it not for the atmospheric pressure on the water in the well at d, which forces the water up the suction-tube, opens the valve at b, and keeps the barrel full. In consequence, the water above a will be raised and come out at… … 236 THEORETICAL MECHANICS. Fig. 147.
Mechanics, Analytic
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