Radioactivity was discovered in 1896 by Henri Becquerel, a French scientist, while testing phosphorescent materials with photographic plates. He discovered that, when the plates were covered with black paper, that phosphorescent materials did not affect the plates until he used uranium salts.
marie curie
Radioactivity was discovered on March 1, 1896, by a French physicist named Henri Becquerel, this discovery is now known as one of the most famous accidental discoveries in the history of physics. Becquerel was then awarded half of the noble prize for physics in 1903, the other half being given to Pierre and Marie Curie for their study of the Becquerel radiation.
Henri Becquerel shared a Nobel award in 1903 with Marie and Pierre Curie for the discovery of spontaneous nuclear radiation through experiments in 1896 involving the phosphorescence of Uranium Salts; specifically, potassium uranyl sulfate.
Marie Curie (although she did not 'discover radioactivity'; that was Becquerel)
Uranium is not artificial radioactivity so it is not clear what the question is about.
Radioactivity was first discovered in 1896 by the French scientist Henri Becquerel.
Becquerel discovered x-rays and radioactivity in 1896.
Marie Curie discovered RADIUM. Sir Henry Becquerel found radioactivity in 1896.
henri bacquerel discovered radioactivity in 1896.Artificial radioactivity was first discovered by Joliot Curie and her husband in 1934 while studying the effect of alpha particle bombardment on like elements like Aluminium
Henri Becquerel discovered in 1896 the natural radioactivity.
Henri Becquerel discovered the radioactivity of uranium in 1896. Polonium and radium were discovered in 1898 by Marie and Pierre Curie.
March 1, 1896: Henri Becquerel Discovers Radioactivity
Antoine Henri Bequerel (15.12.1852-25.08.1908), French physicist, in 1896.
Radioactivity was first discovered by Henri Becquerel on the 1890s. He received the Nobel Prize, along with the Curie's, for this work.
Henri Becquerel was studying the phenomenon of phosphorescence when he discovered radioactivity. He accidentally found that uranium salts emitted radiation that fogged photographic plates wrapped in opaque paper, leading to the groundbreaking discovery of radioactivity in 1896.
Henri Becquerel in 1896.
Radioactivity was discovered during 1896 by Henri Becquerel, who was a French scientist when he was working on phosphorescent materials. Other research was done by Becquerel, Ernest Rutherford, Paul Villard, Pierre Curie, Marie Curie, and others afterwards.