Portrait of Sir William H. Bragg
Numéro d’image : 11827269
| Portrait of Sir William Henry Bragg (1862-1942),English physicist and Nobel Laureate. Bragg is unusual among scientific researchers,in that his notable work didn't start until he was over 40 years old. In 1904 he gave a famous lecture on radioactivity,and in 1909 started researching X- rays at Leeds. In 1913,he discovered that the impact of high-energy electrons on a heavy metal target produced both line and continuous X-ray spectra. The line spectra were characteristic of the type of metal in the target. He and his son analysed these spectra using crystals,founding the technique of X-ray crystallography. He and his son uniquely shared a Nobel Prize in 1915 | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library |
| Taille de l’image : | 3634 px × 4961 px |
| Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
| Property Release : | Non requis |
| Restrictions : | - |
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