The word radioactivity is from the Latin word “radius”, which means ray. Marie Curie’s curiosity led her to conduct still more studies on this mysterious property known as radioactivity. She found that a sample of a rock called pitchblende that was very radioactive, and remained radioactive even after most of the uranium in the sample was removed. The strength of its radioa... ... middle of paper ... ...tes a larger amount of energy. The first nuclear fission reactor was created by a team lead by Enrico Fermi in Chicago in 1942.
Nuclear Fission: a Detailed Analysis of the Discovery and Applications Nuclear Fission, “a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy.” as defined by the dictionary. Nuclear Fission played a large role in World War II. After the U.S was antagonized by the Japanese, the US began to implement Nuclear Fission into weaponry. These weapons of mass destruction were a new milestone in wars. It shocked the world and quickly ended the war.
These attacks would rock the foundations of war, as it changed all previous parameters. Although the Manhattan Project greatly furthered nuclear science, it also vastly increased the damage and horror that could be created by mankind. Some of the world’s greatest physicists contributed to the early research for making the atomic bomb. In fact, scientific understanding of the atom increased in leaps and bounds during the nineteenth century. Much of the earliest research was conducted by Ernest Rutherford, a New Zealand physicist.
As a result, her achievements still radiate into many aspects of our world. I am pursuing to get a Bachelor’s degree in medical laboratory science because I am drawn to science myself, so I chose Marie Curie as the person to explore and highlight four ways in which she has changed my world. To begin with, uranium was used for the creation of the atomic bomb. At the time, people thought it was the greatest scientific invention in history. In 1945, the U.S. detonated an atomic bomb over the Japanese cities Hiroshima and Nagasaki.
They found that one of the radioactivities is a previously known isotope of barium. They then developed a theoretical interpretation of this demonstrated fact. They were able to show conclusive evidence of fission production of radioactive barium from neutron irradiated uranium. On January 13, 1939 Otto Frisch observed fission directly in ionization tube and coined the term “fission”. On January 29, 1939 Robert Oppenheimer realizes excess neutrons must be emitted and a bomb could be possible if they could create a self-sustaining reaction.
The process continues until a stable nuclide has been formed. The discovery of radioactivity in uranium by the French physicist Antoine Henri Becquerel (1852 - 1908) in 1896 forced scientists to radically change their ideas about atomic structure. Radioactivity demonstrated that the atom was neither indivisible nor immutable. Instead of serving merely as an inert matrix for electrons, the atom could change form and emit an enormous amount of energy. Furthermore, radioactivity itself became an important tool for revealing the interior of the atom.
One of the most important areas was the introduction to nuclear medicine. Nuclear medicine is a branch of medicine that involves using radioactive isotopes and imaging. (Tangient LLC) This branch of medicine was made possible by the combined research by Antoine Henri Becquerel, Marie and Pierre Curie, and Ernest Rutherford. Becquerel experimented with a crystal containing some uranium by putting it on top of a photographic plate placed in a darkened drawer and trying to test its reactions to the energy of the sunlight. However, this crystal emitted rays of its own even without the initiating energy source and although he himself did not know it, but what he discovered was radioactivity.
Previously it was thought that atoms were the smallest form of matter therefore ultimately stable and indivisible. However, in 1919 Ernest Rutherford was able to break apart the nucleus of nitrogen with alpha particles from a radioactive source. Following these discoveries research in the area of nuclear fission took off as scientists and physicists around the world were bombarding atoms with alpha particles. Consequently rapidly advancing knowledge on the subject. In 1933 Hungarian physicists Leo Szilard proposed that if an atom split and released more neutrons than it required to split it that an expanding nuclear chain reaction could be the result.
Two years later Irene Curie and Frederic Joliot found that these nuclear transformations created artificial isotopes. Enrico Fermi experimented with bombarding the atoms with neutrons and, in 1935, discovered that this created even more artificial isotopes which lead to the creation of heavier and lighter elements. Otto Hans and Fritz Strassman discovered in 1938 that some... ... middle of paper ... ... into more. It is amazingly efficient in its production of energy. The incidents involving meltdowns have been few and far in between with a total of three occurring since the introduction of nuclear fission as a viable form for the production of electricity.
Dalton’s, Roentagen’s and Thompson’s findings helped guide other scientists to discovering the uses of atomic energy and reactions. Such applications were discovered in the early 1900’s by using Einstein’s equation, which stated that if a chain reaction occurred, cheap, reliable energy could b... ... middle of paper ... ... Scientists were unaware of the damage it would cause, and afterwards, many were driven to feel guilty. Atomic energy has truly changed the world for the worse. Not only was atomic energy dangerous in the past, but currently, as improvements are being made to fission and fusion of an atom, the risk of destroying the world is increasing. Works Cited Henderson, Harry.