Portrait of Robert Hofstadter,American physicist
Numéro d’image : 11829074
| Robert Hofstadter. Portrait of Robert Hofstadter (1915-90),American physicist. In 1948 Hofstadter invented an improved scintillation counter using sodium iodide activated by thallium. He used linearly accelerated electrons scattered by atomic nuclei to study nuclear structure. He found the nuclear charge density was constant but that it fell off rapidly at the suface of the nucleus. The charge distribution was also found to be related to the nuclear mass. Hofstadter also found that neutrons and protons have size and shape; he concluded that they were made of charged shells but that the charges cancelled out in the neutron. In 1961 he shared the Nobel prize for physics | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library |
| Taille de l’image : | 3886 px × 5153 px |
| Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
| Property Release : | Non requis |
| Restrictions : | - |
Prix pour cette image À partir de 45 €
Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €