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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)

Johnson, Frank G., 1835- · Chicago, A.H. Andrews · leaf 143

An illustration from 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, leaf 143
i; HYDRA ULICS. and not flow again until tlie water from the hills, HH, above, fills thecavity up to the level of the highest point of the siphon, L (shown bythe clotted line), which may require a long time. 190. Figure 34.—Sharp angles obstruct the flow^ ofliquids, shown by siphons.—Let the two… … 191. Figure 35.—Conveying water over hills with si-phons.—The ancients made extensive use of the siphon ibr conveyingwater over elevations. Let the diagram represent a hill, which may ex-tend many miles o?er; and if its vertical height be not more than about33 feet from the level of the…

Physics · Astronomy

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