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)
t powerful of all the water-wheels of similar construction, and ismoved principally by the gravity, and slightly by the momentum, ofthe water. L is a gate for shutting off the stream. The operation ofthis wheel is too evident to need further description. Water has thegreatest effect on this wheel… … and momentum of the water. It is furnished either with buckets orfloat-boards, TL, fitting the water-course. N is the gate for shuttingoff the water. ^■^- 161. Figure 7.- Undershot water-wheel.—This is providedwith vanes, or float-boards,projecting from its peri-phery into the stream, assliown, and…
Physics · Astronomy
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