. Natural philosophy. including statics, hydrostatics, pneumatics, dynamics, hydrodynamics, the general theory of undulations, the science of sound, the mechanical theory of music, etc. : designed for the use of normal and grammar schools, and the higher classes in common schools . UNDERSHOT WHEEL. OVERSHOT WHKIL. Note.—The mode in which the water is made to act on these is represen-ted in Figs. 29,30,31. It will be observed that the undershot wheel is mored bythe momentum of the water—the breast wheel and overshot wheel by itsweight aided by its momentum. An overshot wheel will produce twicet
. Natural philosophy. including statics, hydrostatics, pneumatics, dynamics, hydrodynamics, the general theory of undulations, the science of sound, the mechanical theory of music, etc. : designed for the use of normal and grammar schools, and the higher classes in common schools . UNDERSHOT WHEEL. OVERSHOT WHKIL. Note.—The mode in which the water is made to act on these is represen-ted in Figs. 29,30,31. It will be observed that the undershot wheel is mored bythe momentum of the water—the breast wheel and overshot wheel by itsweight aided by its momentum. An overshot wheel will produce twicethe effect of an undershot wheel, the dimensions, fall, and quantity ofwater being the same. The breast wheel is found to consume twice thequantity of water required by an overshot wheel to do the same work. 340. In all water-wheels the greatest mechanical eflfectis produced when the velocity of the water is 2^ timesthat of the wheel. 341 To find the horse powers of a vertical water-wheel :— Let b = breadth of stream in feet, d = depth of stream^V ■=■ mean velocity in feet of stream per minute, h = height of fall,s = weight of one cubic foot of water, and m = modulus of thewheel. mbdvshThen horse powers =■ Example 412.—A water-wheel is worked by a stream 6 feet
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectphysics, bookyear1861
