![]() ![]() She later discovered two new radioactive elements: Radium and Polonium which took her several years since these elements are difficult to extract and extremely rare. Using Pitchblende and chalcolite Curie found that Thorium was radioactive as well. Further investigation showed that the activity of uranium compounds depended upon the amount of uranium present and that radioactivity was not a result of the interactions between molecules, but rather came from the atom itself. Using a device invented by her husband and his brother, that measured extremely low electrical currents, Curie was able to note that uranium electrified the air around it. Though it was Henri Becquerel that discovered radioactivity, it was Marie Curie who coined the term. Marie Curie became the first woman to be awarded the nobel prize and the first person to obtain two nobel prizes when she won the prize for the discovery of Polonium and Radium in 1911. Pierre (1859-1906) and Marie (1867-1934) CurieĬontributions: Pierre and Marie were award the Noble Prize in Physics in 1903 for their work on radioactivity. What Becquerel had discovered was radioactivity. Instead, the salts left very distinct outlines in the photographic paper suggesting that the salts, regardless of lacking an energy source, continually fluoresced. After a few days Becquerel returned to his experiment unwrapping the photographic paper and developing it, expecting only a light imprint from the salts. He placed the wrapped plates into a dark desk drawer. Unfortunately, he had to delay his experiment because the skies over Paris were overcast. ![]() ![]() With the intention of further advancing the study of x-rays, Becquerel intended to place the concealed photographic paper in the sunlight and observe what transpired. Using a method similar to that of Roentgen, Becquerel surrounded several photographic plates with black paper and florescent salts. Henri Becquerel learned of Roentgen's discovery of x-rays through the fluorescence that some materials produce. \( \newcommand\)Ĭontributions: Received the Noble Prize in physics for being the first to discover radioactivity as a phenomenon separate from that of x-rays and document the differences between the two. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |