He found that the crystals had clouded the plates when they were developed. Becquerel was extremely excited by this discovery. He called the rays “uranic rays” and assumed they came exclusively from the element uranium. The scientist Marie Curie became curious about “uranic rays” and began to research them. She worked with her husband to invent a machine that measured weak electric currents so she could test different rock samples for the rays.
Maybe the first step towards the atomic bomb was when Einstein sent his fabled letter to President Roosevelt. Regardless of when exactly these events started, they would lead to the creation of one of the most dangerous weapons to ever be conceived. World renowned physicists, such as Enrico Fermi and Leo Szilard, would help build the atomic bomb and vastly improve America’s understanding of science with their inventions, including the Chicago Pile-1. Bigger and greater experiments were then done by the Uranium Committee and the famed Manhattan Project, all building up to the fatal day of the bombings on Hiroshima and Nagasaki. These attacks would rock the foundations of war, as it changed all previous parameters.
The Atomic Bomb's Impression on Scientific History This website validates the impressive nature of the development of the Atomic bomb as part of scientific history. It will discuss the discoveries that scientists made throughout history that were vitally important to the project. Additionally, this site will also cover the development of the Manhattan Project, including the different production facilities that existed. Lastly, this site will cover the testing of the first Atomic bomb. The development of the Atomic bomb is the most impressive scientific development in history.
During the 1800’s, the late 1800’s, scientist discovered radioactivity. The study of radio activity became a phenomenon amongst scientist during this time period. With the discovery of new elements polonium and radium by Marie and Pierre Curie, the use of radioactivity to probe the center of an atom, provided the instructions of a nuclear weapon that will kill innocent Japanese, leaving there face disfigured, and permanently changed. The majority of people know of the effect of radioactivity but not how it was discovered and its close relation to physics. The discovery of radioactivity can also be referred to the dawn of the nuclear age.
On December 7th, 1941, the entire world changed. The Pearl Harbor attacks occurred on that day, which lead to the start of the Manhattan project, which was a research and development project funded by the United States with the support of United Kingdom as well as Canada. The United States was aware that the Germans were building their atomic bomb; however scientists from the United States, Great Britain, and the Soviet Union realized the potential for uranium-235, which was different from other materials, and ideal for nuclear weapons. With this, the United States pursued this theory, as they had many advantages with an economic advantage and many workers willing to work as well as scientists such as Robert Oppenheimer and Albert Einstein. The Manhattan project lasted around 4 years, and these 4 years changed the world completely.
4 In conclusion The Manhattan project was one of the most important and expensive projects ever done in the United States to this time. The drip of the bomb probably could have been stopped but the US decided to take the action which killed thousands and injured millions. The dropping of the bomb forever changed the meaning of war for all citizens of the world. Bibliography 1 Atomic Bomb : Decision – Target Committee -- http://www.dannen.com/decision/targets.html#E 2 Atomic Archive - Explore the History, Science, and Consequences of the Atomic Bomb – http://www.atomicarchive.com/main.shtml 3 CD-ROM and Online Encarta Encyclopedia 99 4 The Manhattan Project -- http://www.gis.net/~carter/manhattan/ 5 The Avalon Project : The Atomic Bombings of Hiroshima and Nagasaki -- http://www.yale.edu/lawweb/avalon/abomb/mpmenu.html
Albert Einstein signed the letter and gave it to Roosevelt and he said that this needed action so Leo Szilard asked for six thousand dollars worth of materials to produce a nuclear chain reaction. This experiment led by Enrico Fermi showed that fission does release energy, enough energy to create a weapon which could decide the fate of the war. Roosevelt created the Manhattan Project, its goal is to create an Atomic bomb. The project was given to the Army Corps of Engineers who were going to lead and run the project. The Manhattan Project was effective because of bold leadership and scientific advancements that resulted in the creation of the world’s ... ... middle of paper ... ... the right amount who are necessary to run the factories.
The significance of this find was that whilst uraniums atomic number 92, the result of bombarding the atom with neutrons produced barium, whose atomic number is 36, which is exponentially lighter then the prediction. Physicist Lise Meitner and her nephew Otto Frisch proved the result correct through a theoretical explanation. This assured that the experiment was indeed accurate and that the neutron bombardment did indeed split the uranium atom, producing barium and nuclear fission. This new discovery had dramatic implications as it meant that the American government were now capable of producing nuclear bombs. A positive implication of this was that a new source of energy was discovered.
His theories of relativity and his works during the world wars earned him a Nobel Prize in physics, to name one of the many he deservingly received. In 1905 Einstein published the Annus Mirabilis papers. These papers explained each of his four main theories; the photoelectric effect, Brownian motion, Special Relativity and Matter energy-equivalence. These four works created the foundation for modern day physics and brought a new view to space, time and matter. Brownian motion is the random movement of small particles in either a gas or a liquid caused by collisions with the particles around them.
The discovery of fission of heavy nuclei by Otto Hahn was a product of multiple contributions from early twentieth century physicists beginning with Ernest Rutherford’s alpha bombardment and mutation of elements to the discovery of the neutron by James Chadwick to Irene and Frederic Joliet-Curie’s artificial production of radioactive elements to Enrico Fermi’s use of the neuron to bombard uranium . With these contributions to science prior the Second World War, the stage was set for the discovery of nuclear fission by Otto Hahn in 1938. With Hahn’s results published, many other scientists—especially those that had fled war-torn Europe—had noticed that the fission fragments produced were very rich in neutrons, therefore, a chain reaction could be possible . The beginning of World War II in Europe in 1939 accelerated nuclear research for both the Allied and Axis powers, however it was not until the United States became involved in the war in late 1941 that the U.S. began investing in the creation of a new and powerful weapon under a program coined as the Manhattan Project. In the beginning of