A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 178
uit of the wheel at which the weightof the water can begin to act on its circumference. From the pe-culiar form of the buckets they retain the water partially till theyhave descended to near the lowest point of the circuit, and havingdischarged their contents into the tail-stream, they ascend on… … of flowing water.
Physics
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