Definition of Torsion balance. Meaning of Torsion balance. Synonyms of Torsion balance

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Definition of Torsion balance

Torsion balance
Torsion Tor"sion, n. [F., fr. LL. torsio, fr. L. torquere, tortum, to twist. See Torture.] 1. The act of turning or twisting, or the state of being twisted; the twisting or wrenching of a body by the exertion of a lateral force tending to turn one end or part of it about a longitudinal axis, while the other is held fast or turned in the opposite direction. 2. (Mech.) That force with which a thread, wire, or rod of any material, returns, or tends to return, to a state of rest after it has been twisted; torsibility. Angle of torsion (of a curve) (Geom.), the indefinitely small angle between two consecutive osculating planes of a curve of double curvature. Moment of torsion (Mech.) the moment of a pair of equal and opposite couples which tend to twist a body. Torsion balance (Physics.), an instrument for estimating very minute forces, as electric or magnetic attractions and repulsions, by the torsion of a very slender wire or fiber having at its lower extremity a horizontal bar or needle, upon which the forces act. Torsion scale, a scale for weighing in which the fulcra of the levers or beams are strained wires or strips acting by torsion.

Meaning of Torsion balance from wikipedia

- a type of torsion balance (see below). A coil of wire attached to the pointer twists in a magnetic field against the resistance of a torsion spring. Hooke's...
- sometime before 1783 by geologist John Mic****, who constructed a torsion balance apparatus for it. However, Mic**** died in 1793 without completing...
- apparatus consisted of a torsion balance with a pair of 2-inch 1.61-pound lead spheres suspended from the arm of a torsion balance and two much larger stationary...
- The torsion balance is one of the most mechanically accurate of analog balances. Pharmacy schools still teach how to use torsion balances in the U.S....
- Wilhelm Bessel (1784–1846). A much more accurate experiment using a torsion balance was carried out by Loránd Eötvös starting around 1885, with further...
- for G implicitly, using a torsion balance invented by the geologist Rev. John Mic**** (1753). He used a horizontal torsion beam with lead balls whose...
- Cemetery in Budapest, Hungary. A variation of the earlier invention, the torsion balance in the Eötvös experiment, the Eötvös pendulum, designed by Hungarian...
- measurements. Loránd Eötvös's approach in 1908 used a very sensitive torsion balance to give precision approaching 1 in a billion. Modern experiments have...
- electric balance (torsion balance) based on the property of the metal wires of having a reaction torsion force proportional to the torsion angle." Coulomb...
- between them. The torsion balance consists of a bar suspended from its middle by a thin fiber. The fiber acts as a very weak torsion spring. In Coulomb's...