Dictionary:Torsion balance

ADVERTISEMENT
From SEG Wiki
Jump to: navigation, search
Other languages:
English • ‎español


1. An instrument for measuring second derivatives of the gravitational potential. In a non-uniform field, the forces on equal masses at opposite ends of a horizontal beam suspended by a very fine torsion wire differ, producing a torque that can be measured by counter balancing it with a known torque. The measured gradients can be integrated to make a gravity map. 2. A device for measuring the derivatives of force fields, such as magnetic or electrical.