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Essays on Science

Supernovas
Download This PaperWords: 1068 - Pages: 4

... low energy electrons that give off light and can be detected in pure water. are massive exploding giant stars. When the explosion occurs, the resulting illumination can be as bright as an entire galaxy. One of the most energetic explosive happenings known is a supernova. occur at the end of a stars lifetime, when its nuclear fuel is exhausted an it is no longer supported by the release of nuclear energy. If the star is particularly massive, then its core will collapse and in so doing will release a huge amount of energy. This will cause a blast waver that ejects the stars envelope into interstellar space. The result of the collapse may be, in some cases, a ...



Quarks
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... state(1985 Quarks). Quarks always occur in combination with other quarks, they never occur alone. Physicists have attempted to knock a single quark free from a group using a particle accelerator, but have failed. Mesons contain a quark and an antiquark, up, down, and strange, while baryons contain three quarks distinguished by flavours. Each has a charge that is a fraction of that of an electron. Up and down quarks make up protons and neutrons, and can be observed in ordinary matter. Strange quarks can be observed in omega-minus and other short lived subatomic particles which play on part in ordinary matter(1985 Quarks). The interpretation of quarks as phys ...



The Luminescence Of Black Light
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... than that of the ultra-violet excitation but a few exceptions have been found. The quantum theory attempts to explain this property by contending that a certain outside excitation causes an electron to jump from one orbit to another. It is then in an unstable environment causing it to fall back into its original orbit. This process releases energy, and if it is in the visible part of the spectrum, we have a transient light phenomenon. Ultra-violet light is an exciting agent which causes luminescence to occur. There are many materials which exhibit fluorescent characteristics. Many of which are even organic. Teeth, eyes, some portions of the skin, and eve ...



Phosphates In Water Pollution
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... attention recently. The focus is on the environmentally harmful effects in household detergents. Wastewater, from laundering agents, contains phosphates, which are said to be a water pollutant. Most laundry detergents contain approximately 35% to 75% sodium triphosphate (Na5P3O10), which serves two purposes. Providing an alkaline solution (pH 9.0 to 10.5) is necessary for effective cleansing and also to tie up calcium and magnesium ions found in natural waters and prevent them from interfering with the cleansing role of the detergent. Eutrophication is the progressive over-fertilization of water, in which festering masses of algae's blooms, choking rivers ...



Bang, The Life Cycle Begins
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... You would think of this as the end, but only an explosion is needed to wake up and give life to a new universe. Therefore, trapped forever in the cycle of rebirth. As humans we also travel through a cycle of rebirth according to the Hindu religion. We are all trapped on the Wheel of Samsara trying to break free. It is only possible to escape through the laws of Karma. Karma is simply how you act in this life determines what you are after your rebirth. For example, if you live each life being the best Hindu you possible can eventually your soul or Atman will be released and reach liberation. If you decide to go to the other extreme your Atman will co ...



Carbohydrates
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... aldehyde or ketone group has a tendency to react with one of the hydroxyl groups, producing a ring structure. The alpha glucose, which is the base of many polymers, is an energy source in organisms. Although glucose is the common transport sugar for vertebrates, sugars are often transported in other organisms as disaccharides. Sucrose, commonly called cane sugar, is the form in which sugar is transported in plants from the photosynthetic cells to other parts of the plant body. Sucrose is composed of the monosaccharides glucose and fructose. In the synthesis of a disaccharide molecule from two monosaccharides, a molecule of water is removed in the process of forming ...



Stephen J. Hawking By Rachel Finck
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... simple way. The bulk of his work, involving studying, publishing, lecturing, and worldwide travel, is carried on with the help of colleagues, friends, and his wife. Of his illness, Hawking has said that it has enhanced his career by giving him the freedom to think about physics and the Universe. Stephen Hawking has written many essays involving the unified theory, which is a theory summarizing the entire of the physical world; a theory that would stand as a complete, consistent theory of the physical interactions that would describe all possible observations. Our attempts at modeling physical reality normally consists of two parts: a) A set of local laws that ...



Killer Bees
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... in the United States. The bees spread from Texas to New Mexico and Arizona and then into California by 1994. The bees reached an apparent climatic limit to their southern range in the middle of Argentina, and their range is expected to be similarly limited to the southern and coastal states in the United States. They have hybridized to some extent with resident wild and hive populations of European honeybees. However, many of the basic African honeybee traits remain, including rapid population growth, frequent swarming, minimal hoarding of honey, the ability to survive on sparse supplies of pollen and nectar, and a highly defensive nature. Africanized honeybees ...



Panda Report
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... giant panda is a large mammal weighing between 165-353 pounds. Its body length is between 4-5 feet including a tail that is five inches long. Their vision is poor but their sense of smell is excellent. They have a woolly black and white coat, which is slightly oily to prevent water penetration. Giant pandas are very cool looking animals. This is why we have to do everything we can to save them. The giant panda’s breeding season takes place from March to May. Then the baby pandas are born three to six months later weighing only eighty-five to one hundred forty grams. Two cubs may be born from one mother at the same time, but only one will survive. Th ...



Network Security
Download This PaperWords: 2810 - Pages: 11

... but also the control mechanism which implements, restricts and protects the threats from in and out side the organisation. This report proposes the need of security and ways in which the organisations secure their business information will be discussed. Facts and findings 2.1 What is Security? “ Security is the state of mind” [1] An example is mission impossible one of the detective movies who show how easy it is to tap a telephone- Although it is illegal unauthorised access is gained, damage can be done to sensitive data if leaked from one company to another which can provide criminals with the electronic gold mine of fraud opportunities. ...




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