Nuclear Energy
Nuclear energy, also called atomic energy, is the powerful energy released by changes in the nucleus (core) of atoms. The heat and light of the sun result from nuclear energy. Scientists and engineers have found many uses for this energy, including the production of electric energy and the explosion of nuclear weapons. Scientists knew nothing about nuclear energy until the early 1900's, though they knew that all matter consists of atoms. Scientists then further learned that a nucleus makes up most of the mass of every atom and that this nucleus is held together by an extremely strong force. A huge amount of energy is concentrated in the nucleus because of this force. The next step was to make nuclei let go of much of that energy. Scientists first released nuclear energy on a large scale at the University of Chicago in 1942, three years after World War II began. This achievement led to the development of the atomic bomb. The first atomic bomb was exploded in the desert near Alamogordo, New Mexico, on July 16, 1945. In August, United States planes dropped bombs on Hiroshima and Nagasaki, Japan. The bombs largely destroyed both cities and helped end World War II. Since 1945, peaceful uses of nuclear energy have been developed. The en
Hot water from the steam condensers is moved through the towers in such a way that the heat passes into the atmosphere. In the mid-1990's, about 425 nuclear power reactors operated in about 30 countries. Nevertheless, every plant has emergency safety systems. Every plant has instruments that continually measure the radioactivity in and around the plant. Most of today's reactors are thermal reactors. If the nucleus changes into the nucleus of a different element, the change is called a transmutation . He warned Roosevelt that German scientists might already be working on a nuclear bomb. Most of the artificially created elements are heavier than uranium. Most countries depend mainly on fossil fuels. The products of the fusion have less mass than the original nuclei had. These reactors heat the moderator water in the core under extremely high pressure. In 1957, the United Nations (UN) established the International Atomic Energy Agency to promote the peaceful uses of nuclear energy. A reactor can thus use the same water over and over. If U-235 continues to be used at its present rate, the world's supply of it will become so small that it will be too expensive to mine and process by about 2050.
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Acceptance Essays
