Title: torsion pendulum
Long Title: IUPAC Gold Book - torsion pendulum
DOI: 10.1351/goldbook.12814
Status: current

Definition
Device consisting of a disc or other body of large moment of inertia mounted on one end of a torsionally flexible elastic rod or wire, the other end of which is fixed.

Note
When the disc is displaced by a (small) angle around its primary rotational axis it will undergo a simple harmonic oscillation after it is released as long as the torque of the rod or the wire is proportional to the torsion angle.

Source
- PAC, 2013, 85, 1017. 'Glossary of terms relating to thermal and thermomechanical properties of polymers (IUPAC Recommendations 2013)' on page 1042 (https://doi.org/10.1351/PAC-REC-12-03-02)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/12814/html
- json: https://goldbook.iupac.org/terms/view/12814/json
- xml: https://goldbook.iupac.org/terms/view/12814/xml

Citation: Citation: 'torsion pendulum' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.12814
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Accessed: 2026-06-07T01:34:45+00:00