Sir Arthur Eddington
Numéro d’image : 11828326
| Sir Arthur Stanley Eddington (1882-1944),British astrophysicist who pioneered the study of internal stellar structure. In 1926 he showed that in order to remain in equilibrium,a star's inward gravit- ational pressure must balance its outward gas and radiation pressure. He realised that there is an upper limit on the mass of a star above which this balance can't be achieved. He discovered the mass- luminosity relationship,which shows that the more massive a star the greater its luminosity,and which allows the mass of a star to be determined from its intrinsic brightness. His observations of stars close to the Sun's rim during an eclipse provided evidence for the theory of relativity | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library |
| Taille de l’image : | 2894 px × 3357 px |
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