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... weren’t met future space activities would be limited. was eventually used. Once an unmanned space probe was on its way no one would be there to oil or repair it. Solar cells today are made out of one of the earth’s most common ingredients, silicon. Silicon used in producing solar cells is very carefully prepared. The flow of electricity takes place when the cell is brought into sunlight, and the electrons become active and the molecules become stimulated. Then the silicon wall directs the current. Henceforth electricity. In the future scientists would love to use in many different ways. One way is to harvest using vast fields of solar panels to collect and put it through a generato ...
... of anxiety. A panic attack is characterized by unpredictable attacks of severe anxiety with symptoms not related to any particular situation. (Hale, 1886). The person experiencing the attack may not be aware of the cause. Symptoms include four or more of the following: pounding heart, difficulty breathing, dizziness, chest pain, shaking, sweating, choking, nausea, depersonalization, numbness, fear of dying, flushes, fear of going crazy. Heredity, metabolic factors, hyperventilation, and psychological factors may contribute to anxiety causing panic attacks. (Hale, 1886) Panic disorder tends to run in families with first degree relatives of patients having four to seven times greater ri ...
... in a more successful strategy than attempting to grow the cells outside the body and then placing them back into the brains of patients, as some scientists have suggested. Goldman, of Cornell University Medical College in New York, and colleagues surgically extracted brain cells from the hippocampus of eight living male patients, ranging in age from 5 to 63 years, while they underwent surgery for another reason. The investigators isolated stem cells from the brain tissue. The stem cells were then grown in culture along with certain factors known to control the development of neurons. The cells gave rise to functional neurons, Goldman's team reports. ``The adu ...
... aircraft were approximately the size of a dc-4 airliner ( jackson 4). This account was the first sighting to ever receive a great deal of media attention. This sighting gave birth to the phrase "flying saucer" coined by a reporter named bill begrette. Although not the first ufo sighting in history, kenneth arnolds account is considered to be the first documented ufo sighting. The following day mr. Arnold discovered that in addition to his sighting there were several others in the mount ranier area that same day (Jackson 6). When most of us think of ufo sightings, we picture an unemployed, half- crazed, alcoholic hick living in a trailer park in the middle of small town, usa. Often time ...
... that react so destructively, and their arrangement makes no difference. Scientists at CERN in Geneva are working on a device called the LEAR (low energy anti-proton ring) in an attempt to slow the velocity of the anti-protons to a billionth of their normal speeds. The slowing of the anti-protons and positrons, which normally travel at a velocity of that near the speed of light, is neccesary so that they have a chance of meeting and combining into anti-hydrogen.1 The problems with research in the field of anti-matter is that when the anti-matter elements touch matter elements they annihilate each other. The total combined mass of both elements are releas ...
... those of a disruptive child. The underlying truth is: teachers are not able to cope with them on an individual basis and give them more attention. An initial sign that some children demonstrate is a lack of concentration on virtually every task. Excessive disorganization beyond that of regular children along with being more than just the class nuisance can be characteristics of cocaine-exposed children. While most children are able to stay on task, these children will be easily deterred if given the opportunity. These children tend to exhibit a lack of exploration of the environment which results in less pretend play (Cates, 68). In a study done by Mayes, “when given a box of toys, for e ...
... that has been gotten from them. Peter Singer the author of a piece called “Animal Experimentation” in the book Intervention and Reflection displays and evokes the actual suffering of many harmless animals. "In 1953 R. Soloman, L. Kamin, and L. Wynne, experimenters at Harvard University, placed forty dogs in a device called a 'shuttle box,' which consists of a box divided into two compartments, separated by a barrier. Initially the barrier was set at the height of the dog's back. Hundreds of intense electric shocks were delivered to the dogs' feet through a grid floor.... they then blocked the passage between the compartments with ...
... one of us is unique. Is that idea undercut by cloning? That is, if you can deliberately make any number of copies of an individual, is each one special? How special can clones feel, knowing they were replicated like smile buttons. "We aren't just our genes, we're a whole collection of our experiences," says Albert Jonsen. But the idea, he adds, raises a host of issues, "from the fantastic to the profound." When anesthesia was discovered in the 19th century, there was a speculation that it would rob humans of the transforming experience of suffering. When three decades ago, James Watson and Francis Crick unraveled the genetic code, popular discussion turned not to the new hope for v ...
... currents. Without the ocean there would be no life on land. Most of Earth's living space, is ocean, about 97%. And also 97% of Earth's water is ocean. There is a greater variety of living creatures in the ocean than anywhere on land. Scientists say that (including microscopic creatures) there may be 10 to 100 million unnamed species on the ocean bed alone. And that it could take up to 5000 years to classify them. The sea is a very has a very important contribution to human life. We shouldn't take the services that it provides, for granted. Like never before, in the past century, man has removed billions of tons of living creatures from the sea and dumped billions of tons of toxic waste in ...
... 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 physical entities poses two problems. First, sometimes two or three identical quarks have to be in the same quantum state which, because they have to have half integral spin, violates Pauli's exclusion principal. Second, quarks appear to not be able to be separated from the particles they make up. Although the force holding the quarks together is strong it is improbable tha ...
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