Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
50 HYDROSTATICS. … Fi« 17^ 112. Figure 17.— Hydrostatic pressurein mountains.—SupposeL to represent a small poolof water, of only a fewyards in extent, but severalhundred feet below the sur-face water, at W; and F asmall passage leading fromW to L ; then the pressureon the pool of water wouldbe equal to the weight of…
Physics · Astronomy
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