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The Black Hole

.... a nuclear reaction occurs and the gases within the star start to burn continuously. The Hydrogen gas is usually the first type of gas consumed in a star and then other gas elements such as Carbon, Oxygen, and Helium are consumed. This chain reaction fuels the star for millions or billions of years depending upon the amount of gases there are. The star manages to avoid collapsing at this point because of the equilibrium achieved by itself. The gravitational pull from the core of the star is equal to the gravitational pull of the gases forming a type of orbit, however when this equality is broken the star can go into sev .....

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Chromosome Probes At The University Of Toronto

.... who wish to take advantage of the technology. Current prenatal testing involves growing fetal cells in vitro and examining them, over one or two months, to see if there are two copies of a particular chromosome, which is normal, or one or three, which is abnormal. A test using Willard's probes would require only a few cells and a few days to detect abnormalities. "I don't think it's beyond the realm of possibility that these kinds of tests could eventually be done by an obstetrician in the office during the early stages of pregnancy," he adds. The determination of gender is another possible use for the probes. Many dis .....

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Cold Fusion

.... to overcome their natural repulsion of each other and fuse. This reaction produces a larger nucleus that almost immediately shatters, releasing energy. It also frees the muon, which can then repeat the cycle, causing several hundred more such fusions. The fact that the muon is 207 times heavier than an electron gives support for this theory. A nuclei is orbited by an electron making a mini- solar system. If a muon is shot at the nuclei, it will bump the electrons into a smaller orbit and replace their orbit with muons. This then closes tightly around the atom, crushing the atom and nuclei together close enough to fuse .....

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Mechanical Energy

.... is happening. The movement of the windsurfer has a different explanation. The windsurfer is propelled along by a sail which collects mechanical energy from the winds that sweep along the water. This energy has been produced by the sun which warms the earth's surface and sets the air above in motion. The sun's heat comes to the earth as a form of radiant energy. When the heat reaches the surface of the earth, it causes the land or seas to rise in temperature. The sun is very hot. Infact, the center of the sun can reach temperatures of up to 27 million degrees Fahrenheit. This is because of another kind of energy reac .....

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Extra Sensory Perception

.... of an expirimental blitzkreig on problems of parapsychology. Three years of Rhine's telepathy and clairvoyance testing averaged 7 successes out of every 25 people tested, 2 better than chance would have produced, an overall result millions to one against the odd. Chapter ][ What is ESP? ============ What is ESP? Extrasensory Perseption or ESP is the abillity acquire information without using any senses. In the dictionary, ESP is defined as: extra(eks'ra) n. 1. Something in addition to what is usual./ sensory (sen'so ri) adj. Pertaining to se nsation or to any one of five senses, as, sensory experience; carrying .....

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The Influence Of Writers On Charles Darwin

.... and grandson of Erasmus Darwin. Much of Charles' childhood was spent collecting insects, coins and reading various literature on natural history, travel and poetry. Charles Darwin was not a scholarly student during his years at Edinburgh Medical College. He disliked what was taught and found most of the lectures boring, yet he developed a natural interest in studying rocks and fossils. He convinced his father that he could not be a doctor as his father had wished, so instead Charles Darwin studied Theology at the University of Cambridge. After his studies he was given the opportunity to travel on the H.M.S. Beagle as .....

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Life Sciences SIG: Gut Issues - Essay About Dietary Fibers

.... they tumble intact through the stomach and small intestine and end up in the colon where billions of bacterial feed on them - in turn producing intestinal gas. No wonder, then, that dietary fibre has been unwelcome in many of history's nicer neighborhoods. Even 20th century doctors reasoned that since the bulky material provided not a single nutrient, it would only strain already troubled guts. Accordingly, they recommended low-fibre diets for patients suffering from hemorrhoids and other colon disorders often found in the West. But then, about 15 years ago, the prescription was reversed as researchers found that p .....

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Fusion Energy

.... can use this. The two fusion reactions that are the most promising both involve the heavier isotopes of hydrogen: 1) deuterium (composed of one proton and one neutron) Deuterium occurs naturally as a minor constituent in all hydrogen-containing materials--such as water--in quantities sufficient to meet all the energy needs of societies for many billions of years. 2) tritium (composed of one proton and two neutrons). Tritium can be bred from lithium by a neutron-induced reaction in a blanket that could conceivably surround a fusion reactor. The western United States contains large lithium deposits in the salts of dry lake b .....

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Geneticists

.... open their own firms. This is probably because of a recognition that mutations may be able to strengthen our immune systems, raise our endurance, or even other things not thought possible. Most geneticists work in clean laboratories and work between thirty five and forty hours a week. They usually have the necessary equipment given to them by their firm or other supporter. I feel this would be a good career for me because of my inquisitive nature. I have always been intrigued by the altering of DNA to cause mutation. I am also extremely interested in the evolution of different species. .....

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Hereditary

.... potential height, potential strength against disease, and other physical characteristics. A human being has 23 pairs of chromosomes in every cell in his or her body (except reproductive cells). If, during a stage of growth, a fetus somehow loses one of these chromosomes, the baby may die, or have a birth defect. Since this error is written on their genes, they may pass it on to their children, who may or may not have anything wrong with them. The way a person looks, as I have stated, is hereditary. In humans, brown eyes are dominant. Thus, if a person with brown eyes and a recessive blue eye gene were to marry s .....

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Mimicry In Nature

.... sea anemones, and roaches imitating ladybugs. There are even animals that look like themselves, which can also be a form of impersonation. The phenomenon of mimicry, as it's called by biologists, was first noted in the mid-1800s by an English naturalist, Henry W. Bates. Watching butterflies in the forests of Brazil, Bates discovered that many members of the Peridae butterfly family did not look anything like their closest relatives. Instead they bore a striking resemblance to members of the Heliconiidae butterfly family. Upon closer inspection, Bates found that there was a major advantage in mimicking the Heliconiid .....

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Inventions Of The Early 19th Century

.... INVENTIONS OF THE EARLY NINETEENTH CENTURY The art of inventing has been around since remedies have been needed and solutions have been required to make our lives easier and more enjoyable. From the time our forefathers colonized the shores of a new land, up till the time of the modern day super-conductor: people have created devices and made discoveries on our behalf to make life easier for everyone. Before the early nineteenth century communications were inadequate. The limitations of our hearing meant that distant events were known .....

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