Marie Curie her a second time, with the 1911 Nobel Prize in Chemistry. This award was "in recognition of her services to the advancement of chemistry by the discovery of the elements radium and polonium, by the isolation of radium and the study of the nature and compounds of this remarkable element." She was the first person to win or share two Nobel Prizes, and remains alone with Linus Pauling as Nobel laureates in two fields each. A delegation of celebrated Polish men of learning, headed by novelist Henryk Sienkiewicz, encouraged her to return to Poland and continue her research in her
Nobel Prize controversies Millikan might have won in 1920 but for Felix Ehrenhaft's incorrect claim to have measured a smaller charge. Some controversy, however, still seems to linger over Millikan's oil-drop procedure and experimental interpretation, over whether Millikan manipulated his data in the 1913 scientific paper measuring the electron charge. Allegedly, he did not report all his observations. The 1903 prize went to Henri Becquerel (along with Pierre and Marie Curie) "in recognition of the extraordinary services he has rendered by his discovery of spontaneous radioactivity". However, critics alleged that Becquerel merely rediscovered a phenomenon first noticed and investigated decades earlier by the