ما يقوله الناس - كتابة مراجعة
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angle arms axis axle balance ball barometer beam bottom brass bucket centre circumference cistern cock column common condensation construction contrivance cord crank cylinder degree descend described diameter dilatation distance effect employed engine epicycloid equal experiments extremity Fahrenheit fastened feet fixed fluid frame friction groove gudgeons heat hole horizontal horse hygrometer inches instrument invented iron length lever lower machine machinery manner means mercurial thermometer mercury mill motion moveable moving force nearly observed pallet Pantologia Parcieux passes pendulum piece pinion pipe piston piston-rod placed plane plate pounds weight pressure pulley pump quantity radius raised rise rollers rope round scapement screw shaft shew side slide space specific gravity spindle spiral spirit of wine steam surface teeth temperature thermometer tion tooth tube turn upper valve velocity vertical vessel vibration water-wheel weight wheel whole
الصفحة 558 - 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.
الصفحة 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.
الصفحة 288 - Now the distance of the centre of oscillation from the point of suspension...
الصفحة 558 - I have seen the water run like a constant fountain stream forty foot high : 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.
الصفحة 558 - A way that, against several avenues to a fort or castle, one man may charge fifty cannons, playing and stopping when he pleaseth, though out of sight of the cannon. 67- A rare way likewise for musquetoons fastened to the pommel of the saddle, so that a common trooper cannot miss to charge them with twenty or thirty bullets at a time, even in full career.
الصفحة 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.
الصفحة 77 - 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.
الصفحة 559 - ... hundred bolts, through fifty staples, two in each, with a direct contrary motion; and as many more from both sides and ends ; and at the self-same time, shall fasten it to the place beyond a man's natural strength to take it away ; and in one and the same turn both locketh and openeth it.