Henri Becquerel,French physicist
Numéro d’image : 11827556
| Henri Becquerel (1852-1908),French physicist and discoverer of radioactivity. Educated at the Ecole Polytechnique in Paris,he became professor of physics in 1895. In 1896 Becquerel discovered the phenomenon of radioactivity by showing that a uranium salt was able to blacken a wrapped photographic plate. In 1899 he noted that the radiation coming from the uranium salt was deflected by a magnetic field. Becquerel concluded that this radiation was partly composed of charged particles. He also discovered that radiation is toxic when he burnt his skin after leaving a radioactive source in his pocket. Becquerel shared the 1903 Nobel Prize in physics | |
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| Crédit: | Science Photo Library / National Library of Congress |
| Taille de l’image : | 2962 px × 3551 px |
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