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Carbon Dioxide Greenhouse Effect
1,080 wordsWhile some people believe the earth's climatic changes are due to the fact that the universe is getting older, others believe it is due to the greenhouse effect. The greenhouse effect is a naturally occuring phenomenon that is responsible for trapping heat near the earth's surface and keeping the planet warm. It is called the greenhouse effect because the way it works is similar to the way in which a green house functions. In a greenhouse sunlight passes through the transparent roof and walls an...
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Detector Amplifier Hybrids Te Cooled Detector Amplifier Hybrids Dia
425 wordsCooling In many cases IR detectors are cooled during use. This cooling effects the spectral response, responsibilty and response speed. Spectral response characteristics of PbS, Pb Se, and HgCdTe (MCT) shift to the long wavelength side with cooling while Ge, In As and In Sb shift to the short wavelength side. Also, note that the response speeds of PbS and Pb Se become slower with cooling. Methods of cooling include thermoelectric cooling and dewar cooling using dry ice, liquid nitrogen, etc. The...
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000 Square Miles Acid Rain
1,060 wordsThe Adirondacks are a group of mountains surrounded by many lakes and rivers, that cover over 5, 000 square miles in the northeastern part of New York. There are a lot of large tourist villages on every lake. Motor boating and other water activities take place on almost every lake in the area. It is a vacation paradise for thousands. But, industrial emissions from Canada and the Ohio river valley always drift to this area and cause acid rain. This silent killer is destroying these beautiful lake...
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The Northern Lights Aurora Borealis
1,012 wordsYou are outside on a clear summers night, when all of a sudden a flash catches your eye. You whirl around in bewilderment as the black night sky flashes and dances with a whirling array of colors. The northern horizon is draped with an iridescent green, deep blues, sharp violets, scarlet reds, and bright oranges and yellows. You stand awestruck as the colors descend, like a melting rainbow, across the sky. Then, as quickly as they appeared, they vanish without a trace. On clear nights, when the ...
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Atomic Weight Large Quantities
608 wordsAtomic Number: 8 Atomic Radius: 66 pm Atomic Symbol: O Melting Point: - 218. 79 C Atomic Weight: 15. 9994 Boiling Point: - 182. 95 C Electron Configuration: [He] 2 s 22 p 4 Oxidation States: - 2 History (Gr. oxy's: acid, and genes: forming) For many centuries, workers occasionally realized air was composed of more than one component. The behavior of oxygen and nitrogen as components of air led to the advancement of the phlogiston theory of combustion, which captured the minds of chemists for a c...
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Liquid Hydrogen Natural Gas
725 wordsHelium (Greek helios, "sun"), symbol He, inert, colorless, odorless gas element. In group 18 of the periodic table, helium is one of the noble gases. The atomic number of helium is 2. Pierre Janssen discovered helium in the spectrum of the corona of the sun during an eclipse in 1868. Shortly after it was identified as an element and named by the chemist Sir Edward Franklin and the British astronomer Sir Joseph Norman Lockyer. The gas was first isolated from terrestrial sources in 1895 by the Bri...
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Ph Of 5 Sulphur Dioxide
1,087 wordsAcidity is measured using a pH scale, with the number 7 being neutral. A substance with a pH value of less than 7 is acidic, while one of a value greater than 7 is basic. A substance with a pH of 6 is 10 times more acidic than another with a pH of 7. Usually the pH of 5. 6 has been used as the baseline in identifying acid rain, although there has been much debate over the acceptance of this value. Interestingly enough, a pH of 5. 6 is the pH value of carbon dioxide in equilibrium with distilled ...
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Acid Rain Sulfur Dioxide
566 words"Acid rain" is a broad term used to describe several ways that acids fall out of the atmosphere. A more precise term is acid deposition, which has two parts: wet and dry. Wet deposition refers to acidic rain, fog, and snow. As this acidic water flows over and through the ground, it affects a variety of plants and animals. The strength of the effects depend on many factors, including how acidic the water is, the chemistry and buffering capacity of the soils involved, and the types of fish, trees,...
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Bottled Water Billion Dollars
1,151 wordsIn your opinion are water resources over or undervalued in the United States? Water is the most important life element to humans after oxygen. Without water human can live only up to 3 days after which they would die. Today water represents a great and profitable industry for the fact that the producers of the main US soft drinks need water, as well as the ordinary citizen who use water for their household needs, let alone for the lawn use. In the following essay I am going to speak about the wa...
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Carbon Dioxide Emissions Global Climate Change
772 wordsBush Wont Regulate Carbon Dioxide Updated 7: 30 PM ET March 13, 2001 By SCOTT LINDLAW, Associated Press Writer WASHINGTON (AP) Backing off a campaign pledge, President Bush told Congress Tuesday he will not regulate carbon dioxide emissions from power plants. The decision, outlined in a letter sent to a Republican senator, came after furious lobbying from the coal industry. It was a blow to conservationists who see curbing emissions of such greenhouse gases as key to reducing global warming. The...
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Carbon Dioxide Nitrogen Oxide
1,100 wordsThe greenhouse effect occurs when gases such as methane, carbon dioxide, nitrogen oxide and CFCs trap heat in the atmosphere by acting as a pane of glass in a car. ? The glass? lets the sun light in to make heat but when the heat tries to get out the gases absorb the heat. Holding this heat in causes heat waves, droughts and climate changes which could alter our way of living. The main gases that cause the greenhouse effect are water vapor, carbon dioxide (CO 2), and methane which comes mainly f...
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Carbon Monoxide Car Exhaust
340 wordsAccording to the United States Environmental Protection Agency, driving a car is the single most polluting thing that most of us do. This is not a new problem. In the 1950 s the Los Angeles smog made head-line news. Car exhaust causes health problems. There are many solutions to the problem. Laws were enacted as long as twenty years ago to control pollution caused by cars. Since then laws have been made, such as special nozzles on gas pumps that prevent vapor from getting into the air. We also h...
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Electron To Form Covalent Bond Bonds
446 wordsChemical bonds are what make up the world. In bonds, elements are held together and form compounds that may have new physical and chemical properties. There are two main kinds of bonds, they ionic and covalent. In bonding the goal of the atoms involved is to reach a level of stability with less energy. In order to reach the epitome of stability, as in the case of noble gases, an atom strives to complete its outer shell. Either losing or gaining electrons may do this, which concludes in an ionic ...
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University Of Cambridge Alpha Particles
664 wordsRutherford was born on August 30, 1871, in Nelson, New Zealand. He was educated at the University of New Zealand and the University of Cambridge. He was a professor of physics at McGill University in Montreal, Quebec from 1989 to 1907. He was also professor at the University of Manchester in England. After 1919 he was professor of experimental physics and director of the Cavendish Lab at the University of Cambridge moreover held a professorship, after 1920, at the Royal Institution of Great Brit...
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Stainless Steel Defense System
1,166 wordsWhats Metal Allergies On Gold Whats so special about this gold stuff, anyway? I mean, its expensive because its rare but why do we use it in jewellery? Gold has a couple of fairly unique properties that have made it attractive to jewellers throughout history. Prime among these is its resistance to corrosion. The only chemical that can dissolve or even tarnish pure gold is royal water, a mixture so fiendish few of us are ever likely to encounter it and those who do will have other things to worry...
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Nitrogen And Phosphorous Pfiesteria Thrives Dinoflagellates
286 wordsMany states have been plagued with the problem of Pfiesteria, and until recently the cause was unknown. As the climates and ecosystems change some organisms favor the change and others do not. One organism that favors the changes is the dinoflagellates. This organism creates a toxin that causes deep bleeding soars in fish. Then the dinoflagellates eat the fish's exposed flesh and blood. Pfiesteria also has an effect on humans. It has been found to cause severe headaches, blurred vision, nausea, ...
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One Of The 10 Gulf Of Mexico Problem
342 wordsThis article is about a problem with the chemistry in a large area of the Gulf of Mexico. Basically, the problem is that every spring oxygen levels in the deepest parts of the water become so depleted that most local wildlife is suffocated or flees. This part of the Gulf of Mexico is called the hypoxic zone (obviously meaning low oxygen zone). The cause of the problem is the Mississippi River, which deposits 580 cubic kilometers of water to the Gulf every year. Not only is the Mississippi one of...
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Carbon Monoxide Solar System
856 wordsMatthew Berkowitz Science PLUTO 11 - 9 - 99 Pluto is the farthest planet from the Sun (usually) and by far the smallest. Pluto is smaller than seven of the solar systems moons (the Moon, Io, Europa, Ganymede, Callisto, Titan and Triton). Orbit: 5, 913, 520, 000 km (39. 5 AU) from the Sun (average) Diameter: 2274 km Mass: 1. 27 e 22 kg In Roman mythology, Pluto (Greek: Hades) is the god of the underworld. The planet received this name (after many other suggestions) perhaps because its so far from...
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Amino Acids Dna Molecule
245 wordsProtein Synthesis Protein synthesis is the process by which genetic information from the DNA stored in the nucleus is transferred to the ribosomes where it is used to arrange amino acids into proteins. The DNA molecule in the nucleus is unzipped by an enzyme called polymerase. From one of these single strands of a DNA molecule, a mRNA molecule is built. This is accomplished by an enzyme which travels along a portion of DNA between two exons and attaches the opposing base pairs to the backbone of...
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Carbon Dioxide Mercury Venus
1,583 wordsA Planets The Planets A planet is a celestial body that revolves around a central star and does not shine by its own light. The only planetary system that is known to man is our solar system. It is made up of nine planets, which range in size and characteristics. The nine major planets in our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. There are also many other minor planets which are also in our solar system, but they are unimportant compared to the...
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