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    Superconductors Essay

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    1). With the discovery of the Meissner Effect in 1933, a new theory of superconductivity was formulated by Fritz and Hein London in 1935 stating superconductivity ... ... middle of paper ... ...d above in reference to elasticity modulus. Methodology and Results All information provided within this report can be accessed on the World Wide Web. Specifically the sources below provide excellent detail around modern superconductor theories and methodologies. There appears to be consensus regarding the

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    Superconductivity and Superconductors

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    Superconductivity and Superconductors ABSTRACT Superconductivity allows current to pass through a material with no resistive losses at near absolute zero temperatures. It also exhibits the Meissner effect which causes the superconducting material to repel magnetic fields. The application of this technology has been extremely limited due to the prohibitive costs of using Helium to cool the material to the critical temperatures. Recently, however, new ceramic materials were discovered

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    Conductivity

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    was advanced in 1957 by American physicists John Bardeen, Leon Cooper, and John Schrieffer. Their Theories of Superconductivity became know as the BCS theory (which came from each mans last name) and won them a Nobel prize in 1972. The BCS theory explained superconductivity at temperatures close to absolute zero. However, at higher temperatures and with different superconductor systems, the BCS theory has consequently became insufficient to fully explain electron behavior. The Type 1 category of superconductors

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    Before Kamerlign Onnes, in 1908, was able to liquefy helium and bring its temperature down to about 1K, it had been known that the resistance of a metal falls when cooled below room temperature. However, it was not known what value the resistance would approach if the temperature was reduced towards 0K until Onnes, while experimenting with platinum, discovered that, its resistance fell when cooled to a very low value that depended on the metal’s purity. As the temperature of mercury was reduced

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    Social and Economic Issues in Egypt

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    doesn’t look bright for them. Egypt was one of the first and largest countries beginning in 4000 BC when the Lower and Upper kingdoms merged to create one big country. It was conquered multiple times before becoming its own country again. In 525 BC, Egypt was conquered by Persia and was led under their rule until 332 BC. Alexander the Great took over Egypt from Persia in 332 BC and ruled until 30 BC After Cleopatra killed herself at the age of 39, the Byzantine Province ruled Egypt. Napoleon ruled

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    My choice for this particular tourism destination is an island off of the coast of the huge Canadian metropolis of Vancouver called Vancouver Island. This particular island was ranked second in 2009 on Condé Nast Traveler’s Reader’s Choice Awards “Top Islands of North America;” Vancouver Island is a relatively large island with a population of 759,366 inhabitants. It is home to British Columbia’s capital city, otherwise known as Victoria. The island is separated from the mainland by four different

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    Essay On Stonehenge

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    There numerous theories about the stonehenge that no one can fully answer. The stonehenge is located in Stalsburg, England. Conspiracies say it was built 5,000 years by Druids. Others say by the Romans. The Stonehenge is a strange creation and no one really understands the full meaning of why it was built. There are many theories that flow over the stonehenge such as who built it, when, and why they built it. The artist of the stonehenge is still trying to be discovered but there have been many rumors

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    Defining the Great Dionysia The Great Dionysia, celebrated in the Greek month of Elaphebolion, was seen by all Athenians as an important religious festival. It became a vital celebration in the Athenian calendar and gained international status; many ‘foreign aliens’ travelled from other Attic states to witness the performances. Athenians saw it as a religious festival with rituals that needed to be followed, however, prominent politicians were able to use this to their advantage. Some

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    Thunder and Early Scientific Theory It lends its name to one of the most common weather phenomenon on Earth -- the thunderstorm -- and its associated elements: the thunderhead, thunder cloud, thunder bolt, thundershower and thunder clap. Early humans believed thunder came from the deities -- the voice and expression of their god(s). The roster of thunder gods includes: Thor of the Scandinavians, Donar of the Germans, Zeus of the Greeks, Jupiter of the Romans, Taranis of the Celts, Perkunis

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    A Golden Age for Athens?

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    A "Golden Age" for Athens? The 5th century BCE was a period of great development in Ancient Greece, and specifically in Athens. The development of so many cultural achievements within Athens and the Athenian Empire has led scholars to deem this period a "Golden Age." It is true that his period had many achievements, but in the light of the Athenians treatment of women, metics (non-Athenians living in Athens), and slaves it is given to question whether or not the period can truly be called "Golden

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