Meaning of TORSION BALANCE in English
- TORSION BALANCE
Device used to measure the gravitational acceleration at the Earth's surface.
It consists essentially of two small masses at different elevations that are supported at opposite ends of a beam. The latter is suspended from a wire that twists because the masses are affected differently by the force of gravity. When the wire is twisted, an optical system indicates the angle of deflection, and the torque , or twisting force, can be calculated. The torque is correlated with the gravitational force at the point of observation. Torsion balance may also refer to a device used in weighing, a type of equal-arm balance.
Britannica English dictionary. Английский словарь Британика. 2012