What is the contribution of Antoine Henri Becquerel?
Henri Becquerel, in full Antoine-Henri Becquerel, (born December 15, 1852, Paris, France—died August 25, 1908, Le Croisic), French physicist who discovered radioactivity through his investigations of uranium and other substances. In 1903 he shared the Nobel Prize for Physics with Pierre and Marie Curie.
How did Henri discover radioactivity?
In 1901 Becquerel made the discovery that radioactivity could be used for medicine. Henri made this discovery when he left a piece of radium in his vest pocket and noticed that he had been burnt by it. This discovery led to the development of radiotherapy which is now used to treat cancer.
What was Antoine Becquerel studying when he discovered radioactivity?
X-Rays
Becquerel was studying the properties of X-Rays when he discovered radioactivity.
How did Henri Becquerel contribute to the atomic theory?
Like Thomson’s discovery of the electron, the discovery of radioactivity in uranium by French physicist Henri Becquerel in 1896 forced scientists to radically change their ideas about atomic structure. Radioactivity demonstrated that the atom was neither indivisible nor immutable.
What contribution did Becquerel make to the study of nuclear chemistry?
Becquerel discovered radioactivity when experimenting with a fluorescent mineral that happened to contain uranium. Pierre and Marie Curie discovered that several elements exhibit this behavior and called the phenomenon radioactivity; they also discovered the radioactive elements polonium and radium.
When was Henri Becquerel born and when did he die?
Henri Becquerel, in full Antoine-Henri Becquerel, (born December 15, 1852, Paris, France—died August 25, 1908, Le Croisic), French physicist who discovered radioactivity through his investigations of uranium and other substances. In 1903 he shared the Nobel Prize for Physics with Pierre and Marie Curie.
What did Henri Becquerel contribute to atomic theory?
In 1896, French scientist Antoine Henri Becquerel discovered radioactivity which was an early contribution to atomic theory. He discovered this phenomenon while experimenting with uranium and a photographic plate. Becquerel began his experiment by exposing a crystal that contained uranium to sunlight.
How did Henri Becquerel contribute to the discovery of X rays?
Work When Henri Becquerel investigated the newly discovered X-rays in 1896, it led to studies of how uranium salts are affected by light. By accident, he discovered that uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.
Who was the first scientist to discover radioactivity?
Antoine Henri Becquerel (born December 15, 1852 in Paris, France), known as Henri Becquerel, was a French physicist who discovered radioactivity, a process in which an atomic nucleus emits particles because it is unstable.