ما يقوله الناس - كتابة مراجعة
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acceleration acting actual energy angle of repose angular momentum angular velocity applied Article axes balance bars beam called centre of gravity coefficient comparative motion components cord counter-efficiency couple cross-section curve cylinder denote diameter direction of motion driving point efficiency energy exerted epicycloids epitrochoids equal and opposite equation expressed factor of safety figure fixed fluid frame friction given axis inertia instantaneous axis intensity interval joint length line of action line of connection load machine magnitude mass mean mean effective pressure mechanism millimetres moment of inertia moving pieces multiplied oblique ordinates parallel forces perpendicular distance piston pitch surfaces plane polygon position pressure principles produced proportional pulley quantity radius ratio rectangular relatively represent resistance respectively resultant rigid body rotating piece screw shearing shearing stress sliding square steam straight line stress tension tion traversing truss uniform unit velocity-ratio vertical weight wheel
الصفحة 10 - SCOTT (Rev. Thomas) : A COMMENTARY ON THE BIBLE; containing the Old and New Testaments according to the Authorised Version, with Practical Observations, copious Marginal References, Indices, &c. In 3 vols., royal 410. Cloth, 63/- New Edition. TIMES (John, FSA, Author of "Things not Generally Known," &c.) : THOUGHTS FOR TIMES & SEASONS.
الصفحة x - Suppose a* =n, then x is called the logarithm of n to the böge a ; thus the logarithm of a number to a given base is the index of the power to which the base must be raised to be equal to the number. The- logarithm of n to the base a is written Iog0 n ; thus log„ii = a; expresses the same relation, as a* = n.
الصفحة 10 - Sidereal Heavens, And other Subjects connected with Astronomy, as illustrative of the Character of the Deity, and of an Infinity of Worlds With Engravings.
الصفحة 305 - Biblical Cyclopaedia; or, Dictionary of Eastern Antiquities, Geography, Natural History, Sacred Annals and Biography, Theology, and Biblical Literature, Illustrative of the Old and New Testaments.
الصفحة 3 - FINDEN'S FINE ART WORKS. BEAUTIES OF MOORE; being a Series of Portraits of his principal Female Characters, from Paintings by eminent Artists, engraved in the highest style of Art by EDWARD FINDEN, with a Memoir of the Poet, and descriptive letter-press.
الصفحة 231 - The Efficiency of a machine is a fraction expressing the ratio of the useful work to the whole work performed, which is equal to the energy expended. The limit to the efficiency of a machine is unity, denoting the efficiency of a perfect machine in which no work is lost. The object of improvements in machines is to bring their efficiency as near to unity as possible.
الصفحة 10 - To find the area of a trapezoid. RULE. Multiply half the sum of the two parallel sides "by the perpendicular distance between them : the product will be the area.
الصفحة 304 - ANSTED (Prof., MA, FRS) : NATURAL HISTORY OF THE INANIMATE CREATION, recorded in the Structure of the Earth, the Plants of the Field, and the Atmospheric Phenomena. With numerous Illustrations. Large post 8vo.
الصفحة 109 - The tendency of a couple is to turn the body to which it is applied in the plane of the couple — that is, the plane which contains the lines of action of the two forces. (The...