Great Basin College AMS 320 LAB 9 Objective In this lab we will perform an investigation to determine the half-life of a radioactive isotope Ba-137m. Introduction No other facet of chemistry has captured the attention of people in the latter half of the 1900s as the field of radiation. From the discovery of x-rays in 1900 to the destructive power of atomic weapons, we have seen a history that is very interesting. As discussed in class lecture, some atoms are unstable. Some will change into another element if given enough time.
In response to a request from the Office of Strategic Services (OSS), predecessor to the Central Intelligence Agency, Murray finished by October 1943 a 227-page psychological study of Adolf Hitler, “Analysis of the Personality of Adolph [sic] Hitler, with Predictions of His Future Behavior and Suggestions for Dealing with Him Now and After Germany’s Surrender.” Much of this was later published, without adequate acknowledgement of Murray’s role, by Walter C. Langer as The Mind of Adolf Hitler: The Secret Wartime Report (1972). Once the Hitler study was completed, Murray went to Washington, DC, to eventually lead a program selecting recruits for the OSS intelligence service. This multiform assessment drew on procedures from the Harvard Psychological Clinic and used a variety of tests of intelligence, mechanical ability, group problem solving, debating ability, and physical
McCormick continues explaining that Svante Arrhenius who was a Swedish chemist investigated the fires and concluded that Earth’s temperature would increase with the release of so much carbon dioxide and create more carbonic acid. 1932 the Soviet Union started a rain making institute in Leningrad and in 1946 the United States had the General Electric Research Laboratory in New York. The experiments by these two superpowers were greatly exaggerated in their success but they were able to change weather patterns on a small
Her writing has been used in many educational books and articles, which show that her writing is both reliable and accurate (Bellis 3). By writing about the Manhattan Project, Mary was able to combine her interest in history and technology. The tone of the article is very orderly, because the piece follows the events in chronological order. Bellis makes the article both informative and entertaining. “The Light of the explosion then turned orange as the atomic fireball began shooting upwards at 360 feet per second, reddening and pulsing as it cooled (Bellis
He then went back to his roots at University of Chicago where he was a history professor until his retirement. McNeill’s most popular work is “The Rise of the West: A History of the Human Community.” This book explored world history in terms of the effect of different old world civilizations on one another and especially the dramatic effect of Western civilization on others in the past 500 years. It had a major impact on historical theory. McNeill's “Plagues and Peoples” was an important early contribution to the impact of disease on human history and led to the emergence of environmental history as a discipline. Plagues and peoples provides an interesting view on world history by exploring the relationship between mankind and disease.
His entrance into the Manhattan Project was heavily encouraged by his colleague, physicist Robert Wilson. In the Manhattan Project, Feynman was assigned to work in the theoretical division with renowned theoretical physicist Hans Bethe. Feynman's skill and rapid acquisition of the new concepts being developed impressed Bethe to the point where he made Feynman a group leader. Feynman's work partnership with Hans Bethe lead to the creation of the Bethe Feynman formula, which calculated the yield of a fission atomic bomb. His work on the project was so important, that he was present at the detonation of the Trinity Device, the very first atomic explosion created by man.
http://www.enchantedlearning.com The Carbon Cycle: In the atmosphere, carbon is attached to some oxygen in a gas called carbon dioxide. Plants use carbon dioxide and sunlight to make their own food and grow. The carbon becomes part of the plant. Plants that die and are buried may turn into fossil fuels made of carbon like coal and oil over millions of years. When humans burn fossil fuels, most of the carbon quickly enters the atmosphere as carbon dioxide.
Humanity achieved a lot in the years leading up to World War II and the years following. But even with all the great inventions of our time, the Manhattan Project remains the greatest scientific breakthrough of the twentieth century. Work Cited Kelly. The Manhattan Project: The Birth of the Atomic Bomb in the Words of Its Creators, Eyewitnesses, and Historians. New York: Black Dog and Leventhal Publishers, 1995.
Hersey witnessed that “scientists swarmed into the city” (1). His perspective was on the exact scene of an investigation soon after the attack in the nearly exact spot the uranium bomb hit Hiroshima. This puts a style of first-hand account on the passage. However, the perspective of the passage Memoirs of a Mendicant Professor changes, making it different from the passage Hiroshima. With this change came a shift in timing and style.
This power was focused into the form of a bomb. This bomb would define life for everyone on the earth for the nearly the next 60 years. Although people feared the power of the atomic bomb and later the hydrogen bomb it was a necessary step in the advancement of the scientific understanding of the universe. The main catalyst for the building of the atomic bomb is a letter written to president Franklin D. Roosevelt by the famous physicist Albert Einstein (1). Einstein wrote this letter after learning of the work of Austrian physicist L. Szilard on nuclear fission.