A Compendium of Natural Philosophy Adapted to the Use of the General Reader a
The book A Compendium of Natural Philosophy Adapted to the Use of the General Reader a was written by author Denison Olmsted Here you can read free online of A Compendium of Natural Philosophy Adapted to the Use of the General Reader a book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is A Compendium of Natural Philosophy Adapted to the Use of the General Reader a a good or bad book?
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It is evident that this weight, were there nothing to arrest' it, would descend by the force of gravity with accelerated velocity. It endeavors thus to descend, and hence exerts the required force on the pallets of the pendu- lum. For, every time the pendulum performs a double vibration*, (returning to the same point from which it set out) a tooth of the wheel escapes, * and the wheel runs down until the next tooth strikes upon the pallet, and thus gives it the impulse which is necessary to kee...p up the vibrations. 153. It would seem therefore that, for beating seconds, only a sin- gle wheel is necessary ; nor would any more be absolutely indispen- Fig. 39. K * Hence this wheel is called the scapement. 76 MECHANICS. sable ; but in this case the weight would descend so fast, as soon to reach the floor, and the clock would require to be wound up again every few minutes. Hence a series of wheels are interposed be- tween the pendulum and the weight, by which the descent of the latter is retarded upon the principle explained in Art.
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