A Treatise of Mechanics, Theoretical, Practical, and Descriptive, Τόμος 1G.B. Whittaker, 1826 |
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Συχνά εμφανιζόμενοι όροι και φράσεις
accelerating force altitude angle angular velocity applied arch beam body centre of gravity centre of oscillation centrifugal force centripetal force circle consequently constant cord curve cycloid cylinder deduced denoted density descend diameter direction distance effect elastic equal equation equilibrium experiments expression extrados fall feet fluent fluid fluxion force of gravity forces acting given Hence horizontal inches inclined plane instant inversely length lever magnitude matter moving nearly orifice parabola parallelogram parallelogram of forces particles passing pendulum percussion perpendicular plane pressure produce PROP proportional proposition pulley radius ratio represent resistance respect resultant right line rotation SCHOLIUM sides sine solid solid of rotation specific gravity square supposed surface tangent theorem tion triangle tube vertex vertical vessel voussoirs weight wheel whence whole
Δημοφιλή αποσπάσματα
Σελίδα vii - Studies serve for delight, for ornament, and for ability. Their chief use for delight, is in privateness and retiring; for ornament, is in discourse; and for ability, is in the judgment and disposition of business...
Σελίδα xvi - To conclude: Sensation convinces us, that there / are solid, extended substances; and reflection, that ' there are thinking ones; experience assures us of the existence of such beings; and that the one hath a power to move body by impulse, the other by thought; this we cannot doubt of.
Σελίδα 373 - If any number of forces acting at a point can be represented in magnitude and direction by the sides of a POLYGON taken in order, they are in equilibrium.
Σελίδα xvi - For in the communication of motion by impulse, wherein as much motion is lost to one body as is got to the other, which is the ordinariest case, we can have no other conception but of the passing of motion out of one body into another ; which, I think, is as obscure and inconceivable, as how our minds move or stop our bodies by thought ; which we every moment find they do.
Σελίδα 382 - Weigh the denser body and the compound mass, separately, both in water and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then...
Σελίδα 83 - ... will be transmitted by means of the fixed pulley d, to the point b ; and as the point e, on which the weight acts, is equally distant...
Σελίδα 8 - To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal and directed to contrary pans.
Σελίδα vii - When theoretical knowledge and practical skill are happily combined in the same person, the intellectual power of man appears in its full perfection, and fits him equally to conduct with a masterly hand the details of ordinary business, and to contend successfully with the untried difficulties of new and hazardous situations.
Σελίδα 69 - This equilibrium bears such a resemblance to the case in which two moving bodies stop each other when they meet together with equal quantities of motion, that many...
Σελίδα 426 - ... is equal to that which a heavy body would acquire in falling through a space equal to the depth of the opening below the surface of the fluid, and is expressed as follows: v—i/lgh.