Eddington's comparator
Numéro d’image : 11826815
| Eddington's comparator. This device was built by Sir Arthur Eddington (1882-1944),and was designed for measuring changes in the positions of stars,seen on telescope glass plates mounted below the movable microscopes. Eddington would have used a comparator like this to study plates from the 1919 eclipse expeditions,designed to test Einstein's 1915 theory of General Relativity. This predicted that light passing close to a large mass (like the Sun) bends twice as far as predicted by Newton's theory of gravity. This lensing effect changes the position of stars seen near the Sun during a total solar eclipse. Eddington's results,now considered inconclusive,were said to show the shift and were hailed as support for General Relativity | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Steger, Volker |
| Taille de l’image : | 4488 px × 3655 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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