Historic picture showing a neutron
Numéro d’image : 11518106
| Taken in 1932,this was one of the first pictures to show the presence of the neutron,newly discovered by James Chadwick at the Cavendish Laboratory in Cambridge. The cloud chamber photo shows the track of a proton recoiling after being struck by a neutron; because the neutron has no electric charge,it does not itself produce a track. The neutron enters the cloud chamber from below & strikes a sheet of paraffin wax (white horizontal line). The proton is knocked from the paraffin; the small gap before its track is seen is because drops in the cloud chamber did not condense on ions near the paraffin. The photo was taken by French physicists Irene Curie & Frederic Joliot | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / I. CURIE & F. JOLIOT |
| Taille de l’image : | 2941 px × 3543 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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