A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Volume 2

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Page 55 - ... (7) The load, at a maximum, that sails of a similar figure and position will overcome, at a given distance from the centre of motion, will be as the cube of the radius.
Page 578 - An admirable and most forcible way to drive up water by fire, not by drawing or sucking it upwards, for that must be as the philosopher calleth it, infra spheeram activitatis, which is but at such a distance. But this way hath no bounder, if the vessels be strong enough ; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it...
Page 71 - Having thrust under his garter the bowl of a strong tobacco-pipe, his legs being bent, he broke it to pieces by the tendons of his hams, without altering the bending of his leg.
Page 579 - One vessel of water rarefied by fire driveth up forty of cold water ; and a man that tends the work is but to turn two cocks, that, one vessel of water being consumed, another begins to force and refill with cold water, and so successively, the fire being tended and kept constant, which the selfsame person may likewise abundantly perform in the interim, between the necessity of turning the said cocks.
Page 55 - The load at the maximum is nearly, but somewhat less than, as the square of the velocity of the wind ; the shape and position of the sails being the same.
Page 464 - ... means afforded, ex re nata, and no need of provision beforehand, though much better if foreseen, and means prepared for it, and a premeditated course taken by mutual consent of parties.
Page 55 - If sails are of a similar figure and position, the number of turns in a given time will be reciprocally as the radius or length of the sail.
Page 221 - On each bucket is a spring r, which goes over the top or crown of the bar m ' , (fixed to the trough M.} raises the bottom of the bucket above the level of its mouth, and so causes it to empty all its water into the trough. Sometimes this wheel is made to raise water no higher than its...
Page 286 - PENDULUM, in mechanics, any heavy body, so suspended as that it may swing backwards and forwards, about some fixed point, by the force of gravity. These alternate ascents and descents of the pendulum are called its oscillations, or vibrations...
Page 582 - Operation continueth, and advanceth none of the motions above-mentioned, hindering, much less stopping the other; but unanimously, and with harmony agreeing they all augment and contribute strength unto the intended work and operation: And therefore I call this A Semi-omnipotent Engine, and do intend that a Model thereof be buried with me.

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