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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Bal·ance n.
 1. An apparatus for weighing.
 Note:In its simplest form, a balance consists of a beam or lever supported exactly in the middle, having two scales or basins of equal weight suspended from its extremities.  Another form is that of the Roman balance, our steelyard, consisting of a lever or beam, suspended near one of its extremities, on the longer arm of which a counterpoise slides. The name is also given to other forms of apparatus for weighing bodies, as to the combinations of levers making up platform scales; and even to devices for weighing by the elasticity of a spring.
 2. Act of weighing mentally; comparison; estimate.
    A fair balance of the advantages on either side.   --Atterbury.
 3. Equipoise between the weights in opposite scales.
 4. The state of being in equipoise; equilibrium; even adjustment; steadiness.
 And hung a bottle on each side
 To make his balance true.   --Cowper.
    The order and balance of the country were destroyed.   --Buckle.
    English workmen completely lose their balance.   --J. S. Mill.
 5. An equality between the sums total of the two sides of an account; as, to bring one's accounts to a balance; -- also, the excess on either side; as, the balance of an account.  “A balance at the banker's.”
    I still think the balance of probabilities leans towards the account given in the text.   --J. Peile.
 6. Horol. A balance wheel, as of a watch, or clock. See Balance wheel (in the Vocabulary).
 7. Astron. (a) The constellation Libra. (b) The seventh sign in the Zodiac, called Libra, which the sun enters at the equinox in September.
 8. A movement in dancing. See Balance, v. t., 8.
 Balance electrometer, a kind of balance, with a poised beam, which indicates, by weights suspended from one arm, the mutual attraction of oppositely electrified surfaces. --Knight.
 Balance fish. Zool. See Hammerhead.
 Balance knife, a carving or table knife the handle of which overbalances the blade, and so keeps it from contact with the table.
 Balance of power Politics, such an adjustment of power among sovereign states that no one state is in a position to interfere with the independence of the others; international equilibrium; also, the ability (of a state or a third party within a state) to control the relations between sovereign states or between dominant parties in a state.
 Balance sheet Bookkeeping, a paper showing the balances of the open accounts of a business, the debit and credit balances footing up equally, if the system of accounts be complete and the balances correctly taken.
 Balance thermometer, a thermometer mounted as a balance so that the movement of the mercurial column changes the inclination of the tube.  With the aid of electrical or mechanical devices adapted to it, it is used for the automatic regulation of the temperature of rooms warmed artificially, and as a fire alarm.
 Balance of torsion. See Torsion Balance.
 Balance of trade Pol. Econ., an equilibrium between the money values of the exports and imports of a country; or more commonly, the amount required on one side or the other to make such an equilibrium.
 Balance valve, a valve whose surfaces are so arranged that the fluid pressure tending to seat, and that tending to unseat, the valve, are nearly in equilibrium; esp., a puppet valve which is made to operate easily by the admission of steam to both sides. See Puppet valve.
 Hydrostatic balance. See under Hydrostatic.
 To lay in balance, to put up as a pledge or security. [Obs.] --Chaucer.
 To strike a balance, to find out the difference between the debit and credit sides of an account.

From: Webster's Revised Unabridged Dictionary (1913)

 Hy·dro·stat·ic Hy·dro·stat·ic·al a.  Of or relating to hydrostatics; pertaining to, or in accordance with, the principles of the equilibrium of fluids.
    The first discovery made in hydrostatics since the time of Archimedes is due to Stevinus.   --Hallam.
 Hydrostatic balance, a balance for weighing substances in water, for the purpose of ascertaining their specific gravities.
 Hydrostatic bed, a water bed.
 Hydrostatic bellows, an apparatus consisting of a water-tight bellowslike case with a long, upright tube, into which water may be poured to illustrate the hydrostatic paradox.
 Hydrostatic paradox, the proposition in hydrostatics that any quantity of water, however small, may be made to counterbalance any weight, however great; or the law of the equality of pressure of fluids in all directions.
 Hydrostatic press, a machine in which great force, with slow motion, is communicated to a large plunger by means of water forced into the cylinder in which it moves, by a forcing pump of small diameter, to which the power is applied, the principle involved being the same as in the hydrostatic bellows. Also called hydraulic press, and Bramah press. In the illustration,  is a pump with a small plunger , which forces the water into the cylinder , thus driving upward the large plunder , which performs the reduced work, such as compressing cotton bales, etc.