Free Essays on Atomic Bomb

In 1945, the United States made a decision that forever changed the face of warfare on this planet. That decision was to drop a brand new invention, the atomic bomb, on Japan. The atomic bomb was, and still is, the most feared weapon any nation could possess. This bomb took years to evolve into a useful weapon, and in this paper the timeline will unfold. Although the attack took place in 1945, the years of development are just as important. In all reality, Hitler played a major role in the development of the atomic bomb. It was his belief that Germans were better than Jews. This provoked one of the greatest minds in our history, Albert Einstein, to leave Germany. Einstein, who was a Jew, had enough money to flee Germany and settle in America. When Albert Einstein published his theory of relativity, Einstein asserted that matter (mass) and energy were two forms of the same thing. According to Einstein, if somehow we could transform mass into energy, it would be possible to "liberate" huge amounts of energy. However, a theory is only a theory until it is proven. During the next decade, a major step was taken in proving the theory of relativity when Ernest Rutherford and Niels Bohr described the structure of an atom more precisely. They said an atom consists of a positively charged core, the nucleus, and negatively charged electrons that revolve around the nucleus. It was the nucleus, scientists concluded, that had to be broken or "exploded" if atomic energy was to be liberated. In 1939, prior to the beginning of World War II, Albert Einstein wrote to U.S. President Franklin D. Roosevelt. Einstein and several other scientists told Roosevelt of efforts in Nazi Germany to purify Uranium-235 which might in turn be used to build an atomic bomb. The letter, which bore only Einstein's signature, helped lend urgency to efforts in the U.S. to build the atomic bomb, even though Einstein himself played no role in the work and knew nothin... Free Essays on Atomic Bomb Free Essays on Atomic Bomb In 1945, the United States made a decision that forever changed the face of warfare on this planet. That decision was to drop a brand new invention, the atomic bomb, on Japan. The atomic bomb was, and still is, the most feared weapon any nation could possess. This bomb took years to evolve into a useful weapon, and in this paper the timeline will unfold. Although the attack took place in 1945, the years of development are just as important. In all reality, Hitler played a major role in the development of the atomic bomb. It was his belief that Germans were better than Jews. This provoked one of the greatest minds in our history, Albert Einstein, to leave Germany. Einstein, who was a Jew, had enough money to flee Germany and settle in America. When Albert Einstein published his theory of relativity, Einstein asserted that matter (mass) and energy were two forms of the same thing. According to Einstein, if somehow we could transform mass into energy, it would be possible to "liberate" huge amounts of energy. However, a theory is only a theory until it is proven. During the next decade, a major step was taken in proving the theory of relativity when Ernest Rutherford and Niels Bohr described the structure of an atom more precisely. They said an atom consists of a positively charged core, the nucleus, and negatively charged electrons that revolve around the nucleus. It was the nucleus, scientists concluded, that had to be broken or "exploded" if atomic energy was to be liberated. In 1939, prior to the beginning of World War II, Albert Einstein wrote to U.S. President Franklin D. Roosevelt. Einstein and several other scientists told Roosevelt of efforts in Nazi Germany to purify Uranium-235 which might in turn be used to build an atomic bomb. The letter, which bore only Einstein's signature, helped lend urgency to efforts in the U.S. to build the atomic bomb, even though Einstein himself played no role in the work and knew nothin... Free Essays on Atomic Bomb Ever since the dawn of time man has found new ways of killing each other. The most destructive way of killing people known to man would have to be the atomic bomb. The reason why the atomic bomb is so destructive is that when it is detonated, it has more than one effect. The effects of the atomic bomb are so great that Nikita Khrushchev said that the survivors would envy the dead (International Physicians for the Prevention of Nuclear War, 1982). These devastating physical effects come from the atomic bomb’s blast, the atomic bomb’s thermal radiation, and the atomic bomb’s nuclear radiation. An atomic bomb is any weapon that gets its destructive power from an atom. This power comes when the matter inside of the atoms is transformed into energy. The process by which this is done is known as fission. The only two atoms suitable for fissioning are the uranium isotope U-235 and the plutonium isotope Pu-239 (Outlaw Labs). Fission occurs when a neutron, a subatomic particle with no electrical charge, strikes the nucleus of one of these isotopes and causes it to split apart. When the nucleus is split, a large amount of energy is produced, and more free neutrons are also released. These neutrons then in turn strike other atoms, which causes more energy to be released. If this process is repeated, a self-sustaining chain reaction will occur, and it is this chain reaction that causes the atomic bomb to have its destructive power (World Book, 1990). This chain reaction can be attained in two different ways. The first type of atomic bomb ever used was a gun-type. In this type two subcritical pieces of U-235 are placed in a device similar to the barrel of an artillery shell. One piece is placed at one end of the barrel and will remain there at rest. The other subcritical mass is placed at the other end of the barrel. A conventional explosive is packed behind the se... Free Essays on Atomic Bomb Hiroshima and Nagasaki On August 6, 1945, with no forewarning, the United States used its massive, secret weapon against Hiroshima, Japan. On August 6, 1945, the United States used its massive, secret weapon against Hiroshima, Japan. This atomic bomb, the equivalent of 20,000 tons of TNT, flattened the city, killing tens of thousands of civilians. While Japan was still trying to comprehend this devastation three days later, the United States struck again, this time, on Nagasaki. Hiroshima Colonel Paul W. Tibbets, Jr., pilot of the ENOLA GAY, the plane that dropped the atomic bomb on Hiroshima, waves from his cockpit before the takeoff, 6 August 1945. At 2:45 a.m. on Monday, August 6, 1945, a B-29 bomber, the Enola Gay, took off from Tinian, a North Pacific island in the Marianas, 1,500 miles south of Japan. The twelve-man crew (picture) were on board to make sure this secret mission went smoothly. Colonel Paul Tibbets, the pilot, nicknamed the B-29 the "Enola Gay" after his mother. Just before take-off, the plane's nickname was painted on its side. The Enola Gay was a B-29 Superfortress (aircraft 44-86292), part of the 509th Composite Group. In order to carry such a heavy load as an atomic bomb, the Enola Gay was modified: new propellers, stronger engines, and faster opening bomb bay doors. (Only fifteen B-29s underwent this modification.) Even though it had been modified, the plane still had to use the full runway to gain the necessary speed, thus it did not lift off until very near the water's edge.1 The Enola Gay was escorted by two other bombers which carried cameras and a variety of measuring devices. Three other planes had left earlier in order to ascertain the weather conditions over the possible targets. On a hook in the ceiling of the plane, hung the ten-foot atomic bomb, "Little Boy." Navy Captain William S. Parsons ("Deak"), chief of the Ordnance Division in the "Manhattan Project," was the Enola Gay's we... Free Essays on Atomic Bomb Atomic Bomb Analysis of the Atomic Bomb Ever since the dawn of time man has found new ways of killing each other. The most destructive way of killing people known to man would have to be the atomic bomb. The reason why the atomic bomb is so destructive is that when it is detonated, it has more than one effect. The effects of the atomic bomb are so great that Nikita Khrushchev said that the survivors would envy the dead (International Physicians for the Prevention of Nuclear War, 1982). These devastating physical effects come from the atomic bomb’s blast, the atomic bomb’s thermal radiation, and the atomic bomb’s nuclear radiation. An atomic bomb is any weapon that gets its destructive power from an atom. This power comes when the matter inside of the atoms is transformed into energy. The process by which this is done is known as fission. The only two atoms suitable for fissioning are the uranium isotope U-235 and the plutonium isotope Pu-239 (OutlawLabs). Fission occurs when a neutr on, a subatomic particle with no electrical charge, strikes the nucleus of one of these isotopes and causes it to split apart. When the nucleus is split, a large amount of energy is produced, and more free neutrons are also released. These neutrons then in turn strike other atoms, which causes more energy to be released. If this process is repeated, a self-sustaining chain reaction will occur, and it is this chain reaction that causes the atomic bomb to have its destructive power (World Book, 1990). This chain reaction can be attained in two different ways. The first type of atomic bomb ever used was a gun-type. In this type two subcritical pieces of U-235 are placed in a device similar to the barrel of an artillery shell. One piece is placed at one end of the barrel and will remain there at rest. The other subcritical mass is placed at the other end of the barrel. A conventional explosive is packed behind the seco...

5 Types of Specialized Dictionaries

5 Types of Specialized Dictionaries 5 Types of Specialized Dictionaries 5 Types of Specialized Dictionaries By Mark Nichol Dictionaries aren’t just for looking up spellings and meanings of a broad selection of terms; you’ll find biographical, geographical, and medical dictionaries, among other specialized volumes. Here are five other categories of repositories of words, with a link to one online example of each. 1. Reverse Dictionaries A reverse dictionary enables you to type in a phrase that describes a word or phrase you’re trying to think of. The matching technology is imperfect, of course, but a reverse dictionary is your best chance for coming up with that elusive term. Try this reverse dictionary at the dictionary portal OneLook.com, or, if you prefer a print resource, check out the Illustrated Reverse Dictionary, by John Ellison Kahn. 2. Visual Dictionaries Visual dictionaries like this one provide visitors with illustrations of animate and inanimate things labeled with parts and components. Merriam-Webster’s publishes a print visual dictionary, but many others are available, including multilingual ones and those produced especially for children. 3. Beginners’/Learners’ Dictionaries The Cambridge University Press has, among its family of online dictionaries, one with simplified definitions; for American English specifically, Merriam-Webster offers Word Central, an online children’s dictionary that is helpful for learners of all ages without being juvenile in presentation. For a print version, use a dictionary for young students (like the Scholastic Children’s Dictionary) though the child-oriented design of these books may put off older learners or one for English-language learners. 4. Translation Dictionaries Online dictionaries that enable visitors to type in a word and receive its equivalent in another language (or obtain an English word by entering a foreign one) abound; many websites, such as Dictionary.com’s Translator site, include search engines for multiple languages. Of course, print translation dictionaries are also easy to find on the Internet and in bookstores. (Recently published ones available at used-book stores are a good bargain.) 5. Unusual-Words Dictionaries Numerous Web-savvy language aficionados have created online repositories of seldom-used and/or offbeat words; go, for example, to the Phrontistery. You’ll also find many similar print compendiums, such as The Word Lovers’ Dictionary: Unusual, Obscure, and Preposterous Words, by Josefa Heifetz. Want to improve your English in five minutes a day? Get a subscription and start receiving our writing tips and exercises daily! Keep learning! Browse the Book Reviews category, check our popular posts, or choose a related post below:30 Synonyms for â€Å"Meeting†Best Websites to Learn EnglishPreposition Mistakes #3: Two Idioms