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)
119 water will run through its spoke to the centre, F, of the wheel, whereit is discharged, as sliown in the diagram. If floats or disks were fastened to the extremities of the spokes, thecurrent of a stream would revolve the wheel. 166. Figure 11.—Wheel and buckets, or Persian Wheel. —This… … water; carried up, and overturned by coming in contact with a pin inthe trough. Arrows in the water-lines show the direction of the cur-rent and the motion of the wheel. This is an ancient Persian invention. The greatest work in France,for artificial irrigation, was a series of these wheels, in…
Physics · Astronomy
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