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Ozone Depletion Ozone Layer
5,350 wordsFrom: (Robert Parson) Newsgroups: sci. environment, sci. answers, news. answers Subject: Ozone Depletion FAQ Part I: Introduction to the Ozone Layer Organization: University of Colorado, Boulder Expires: Sun, 1 Feb 1998 00: 00: 00 GMT Message-ID: 67 rss$ Summary: This is the first of four files dealing with stratospheric ozone depletion. It provides scientific background for the more detailed questions in the other three parts. Keywords: ozone layer cfc stratosphere depletion These files are pos...
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Alpha Particles Nuclear Physics
758 wordsErnest Rutherford was born in New Zealand in 1871 as one of 12 children. It was Rutherford who first "split" an atom and who discovered the atomic "nucleus", a name that he invented. For this he is regarded as the greatest experimental physicist of his time. Rutherford was one of the first and most important researchers in nuclear physics. Soon after the discovery of radioactivity in 1986 by the French physicist Antoine Henri Becquerel, Rutherford discovered the three different types of radiatio...
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University Of Cambridge Nobel Prize
1,240 wordsT 3 IBS Chemistry Historical Development of Atomic Structure The idea behind the atom goes back to the Ancient Greek society, where scientists believed that all matter was made of smaller, more fundamental particles called elements. They called these particles atoms, meaning not divisible. Then came the chemists and physicists of the 16 th and 17 th centuries who discovered various formulae of various salts and water, hence discovering the idea of a molecule. Then, in 1766 was born a man named J...
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Creation Myth Egyptian Mythology
2,377 wordsCreating the Past Ancient Egyptians and Norsemen, along with all other cultures, believed that the world and all that lies therein were created by a Supreme Being or force. For most people, then and now, faith alone is not enough to base their very existence on: people want to know why, how, and all of the details. It is only human nature to be curious and want to know why something happened the way it did. Curiosity is the reason the Egyptians and Norsemen began to create myths and deities. Sin...
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Carbon Atom Molecular Formula
2,405 words3. 2 Lots of carbon compounds seem to be isomers. What is an isomer? In organic chemistry, there are many examples of different compounds which have the same molecular formula as each other, but different arrangements of the atoms in their molecules, (different structural formulae). These compounds are said to be isomers of one another. Isomerism also occurs in inorganic chemistry, but it is less common. There are two types of isomerism common in organic chemistry: structural isomerism and stere...
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Bombe Atom Ique Fission Nucl Aire Les
1,293 wordsBombe Atom ique est une arme tr? s dangerous, Il a la capacity? de tu? millions de personnes, et d? true un pays entier. La bombe atom ique repr? sente aussi la puissance des pays, et cela a caus? de plusieurs probl? mes. Dans ce reportage je vai's parler sur la d? cisco de construe la bombe atom ique, et aussi de la d? cisco de l'utili's? . Je vai's aussi parler sur les bombe's qui on tomb? e sur Hiroshima et Nagasaki et leurs cons? quences. Pendant la deuxi? me Guerre Mondiale, Allemagne et da...
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Period Of Time Atomic Bomb
951 wordsTHE ATOMIC BOMB Seven months after the discovery of the neutron, on September 12, 1932, Leo Szilard inaugurated the possibility of a controlled release of atomic power through a multiplying neutron chain reaction. Leo was legally recognized as the inventor of the atomic bomb on July 4, 1934. He described not only the basic concept of using neutron induced chain reactions to create explosions, but also the key concept of the critical mass. There are 2 types of atomic explosions, one in which two ...
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Gold Foil Experiment Model Of An Atom Thomson's
268 wordsThe evolution of the modern atom model took several years to evolved with contribution from different scientists. One of these scientists, the first to come up with a modern model of the atom is JJ Thomson. Thomson proposes that the structure of an atom is mainly a sphere. A sphere that is filled with positive electronic field and contains tiny particles that has a negative charge. He called the tiny particles corpuscles. Thomson's model of the atom is often refer as the plum pudding model becau...
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Molecular Biology Solar Cells
5,084 words18 seems NANO TECHNOLOGY Nanotechnology 18 seems to be the magic number in todays manufacturing process. Intel and AMD both boast their upgraded production, and note that it will lead to ever increasing speeds and capabilities. Quietly, however, there is a growing consensus among the scientific community that silicon based-chips are on their way out. Tiny, molecular computers are becoming more and more feasible, and may do to silicon what transistors did to vacuum tubes. Across the world, univer...
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Hydrogen Atoms Energy Levels
374 wordsNiels Bohr s model of the hydrogen atom Niels Bohr s model of the hydrogen atom, was the primary reason for the understanding of energy levels. Bohr was able to explain the bright line spectrum of hydrogen. Sparked by the recent discovery of the diffraction patterns, scientists believed electrons could be described as waves. Bohr hypothesized that energy is being added to the hydrogen gas in the electricity form, and then leaving the gas in the form of light. He figured the light rays to be quan...
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Charged Particles Electric Charge
1,314 wordsJ. J. Thomson Science lecturers who traveled from town to town in the middle nineteenth century delighted audiences by showing them the ancestor of the neon sign. They took a glass tube with wires embedded in opposite ends... put a high voltage across... pumped out most of the air... and the interior of the tube would glow in lovely patterns. In 1859 a German physicist sucked out still more air with an improved pump and saw that where this light from the cathode reached the glass it produced a f...
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University Of Cambridge Nobel Prize
1,250 wordsYazan Fahmawi T 3 IBS Chemistry Ms. Redman Historical Development of Atomic Structure The idea behind the " atom" goes back to the Ancient Greek society, where scientists believed that all matter was made of smaller, more fundamental particles called elements. They called these particles atoms, meaning " not divisible. " Then came the chemists and physicists of the 16 th and 17 th centuries who discovered various formulae of various salts and water, hence discovering the idea...
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World War Ii Werner Heisenberg
4,499 wordsWerner Heisenberg And The Heisenberg Uncertainty Principle Werner Heisenberg And The Heisenberg Uncertainty Principle 2 Books related to Werner Heisenberg and the Heisenberg Uncertainty Principle Werner Heisenberg and the Heisenberg Uncertainty Principle Werner Heisenberg, born in the dawn of the twentieth century became one of its greatest physicists; he is also among its most controversial. While still in his early twenties, he was among the handful of bright, young men who created quantum mec...
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Subatomic Particles Angular Momentum
3,969 wordsThe atom, although small in size and great in number, is one of the greatest enigmas in the science world today. Over 200 different subatomic particles have been found, and scientists are still looking for more. The most basic parts of the atom are the electron, the proton and the neutron. These three make up a small group of the know subatomic particles. Of these three only the electron is actually a fundamental particle. The proton and neutron are both hadrons composed of different smaller par...
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