ما يقوله الناس - كتابة مراجعة
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angle angular velocity applied atmosphere axis beam body boiler centre of gravity centrifugal force chemical affinity circle circumference column compression condensed crank cubic foot cubic inches curve cylinder density diameter displaced fluid distance divided draw effect elasticity engine equal equilibrium feet per second fixed fluid foot forces acting friction Hence horizontal horse-power inclined plane iron length lever load machinery magnitude and direction mass material measure mechanical mercury minute motion moving multiplied parallel parallelogram parallelogram of forces particles passing perpendicular piston plane portion position pressure produced proportion pulley quantity radius resistance resultant revolution revolutions per minute revolve rotation round screw shaft side solid specific gravity square inch steam straight line strain strap strength strength of materials stroke substance suppose surface teeth tube valve velocity vertical vessel volume weight wheel
الصفحة 486 - Square Measure. 144 square inches 1 square foot, 9 square feet 1 square yard, 30J square yards 1 square rod, 40 square rods 1 rood, 4 roods 1 acre.
الصفحة 416 - Multiply the square of the length of the crank in inches by 1-661, and then multiply the square of the diameter of the cylinder in inches by...
الصفحة 16 - Impenetrability is that property of matter which prevents two bodies from occupying the same space at the same time.
الصفحة 13 - Is not this Medium much rarer within the dense Bodies of the Sun, Stars, Planets and Comets, than in the empty celestial Spaces between them? And in passing from them to great distances, doth it not grow denser and denser perpetually, and thereby cause the gravity of those great Bodies towards one another, and of their parts towards the Bodies; every Body endeavouring to go from the denser parts of the Medium towards the rarer?
الصفحة 487 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
الصفحة 16 - nay all the known bodies in the universe together, as " far as we know, may be compounded of no greater a " portion of solid matter than might be reduced into a <' Globe of one inch only in diameter, or even less.
الصفحة 412 - To find the piston speed of an engine, multiply the stroke in inches by the number of revolutions per minute and divide the product by 6. EXAMPLE. — An engine with a 52-inch stroke runs at a speed of 66 revolutions per minute.
الصفحة 174 - ... which is equal to the area of the surface, and altitude equal to the depth of the centre of gravity of the surface below the surface of the fluid.
الصفحة 39 - Majesty to inquire into the subject of weights and measures, that a cubic inch of distilled water weighed in air by brass weights at the temperature of 62 degrees of Fahrenheit's thermometer, the barometer being at 30 inches, is equal to 252 grains, and 456 thousandth parts of a grain...