. The Family tutor . Whenplunged in motionless water the level in the tube corresponds withthat outside, but the impulse of a stream causes the water to risein the tube until its vertical pressure coun-terpoises the force. The force of flowing water is often em-ployed for various purposes in the arts. Wehave several different kinds of water-wheels,as the undershot, the overshot, and thebreast-wheel. The first of these consists ofa wheel or drum revolving upon an axis,and on the periphery there are placed float-boards, a h c d e, &c. It is to be fixed sotliat its lower floats are immersed in a
. The Family tutor . Whenplunged in motionless water the level in the tube corresponds withthat outside, but the impulse of a stream causes the water to risein the tube until its vertical pressure coun-terpoises the force. The force of flowing water is often em-ployed for various purposes in the arts. Wehave several different kinds of water-wheels,as the undershot, the overshot, and thebreast-wheel. The first of these consists ofa wheel or drum revolving upon an axis,and on the periphery there are placed float-boards, a h c d e, &c. It is to be fixed sotliat its lower floats are immersed in a run-ning stream or tide, and is driven round bythe momentum of the current. [ It is obvious that we may make the diameter of an undershot wheel as great as weplease ; and that, the greater the diameter, the larger will be the gain of power. Butin this, as in all previous instances, what is gained in power is lost in velocity ; since agiven amount of movement in the water, which would carry a wheel of 12 feet in.
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Keywords: ., bookcentury1800, bookdecade1850, bookpublisherlondo, bookyear1851
