Defn: 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.
TORSIONAL
Tor"sion*al, a.
Defn: Of or pertaining to torsion; resulting from torsion, or the force with which a thread or wire returns to a state of rest after having been twisted round its axis; as, torsional force.
TORSION ELECTROMETER
Tor"sion e*lec*trom"e*ter. (Elec.)
Defn: A torsion balance used for measuring electric attraction or repulsion.
TORSION GALVANOMETER
Torsion galvanometer. (Elec.)
Defn: A galvanometer in which current is measured by torsion.
TORSION HEAD
Torsion head.
Defn: That part of a torsion balance from which the wire or filament is suspended.
TORSION INDICATOR
Torsion indicator.