Von Eotvos's torsion scale
Numéro d’image : 11826816
| Von Eotvos's torsion scale. This device,designed to measure gravitational acceleration,was built and operated by the Hungarian physicist Lorand von Eotvos (1848-1919). His 1889 experiment measured the differences in the gravitational acceleration of different masses. This difference was found to be effectively zero,showing that mass and inertia are equivalent. This is a central postulate of Einstein's 1915 theory of General Relativity. A torsion scale can measure tiny attractions between laboratory-scale masses,doing so by small changes in the torsion of twisted wires | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Steger, Volker |
| Taille de l’image : | 3638 px × 4492 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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