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    Superconductivity

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    Superconductivity INTRODUCTION We've all heard about superconductivity. But, do we all know what it is? How it works and what are its uses? To start talking about superconductivity, we must try to understand the how "normal" conductivity works. This will make it much easier to understand how the "super" part functions. In the following paragraphs, I will explain how superconductivity works, some of the current problems and some examples of its uses. CONDUCTIVITY Conductivity is the ability of

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    Superconductivity

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    SUPERCONDUCTIVITY DEFINITION OF SUPERCONDUCTIVITY Superconductivity is a phenomenon displayed by certain conductors that show no resistance to the flow of electric current. Conductors are materials in which the electron current goes through. There are 4 different kinds of conductors. Insulators, like glass or wood, have a very high resistance to electron current while semi-conductors, such as silicon, have a medium resistance. Conductors, like copper and other metals, have very low resistance

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    until the resistance fell extremely suddenly at about 4K. Below 4K, mercury passed into a new state with electrical properties unlike those previously known: this new state that mercury had entered was called the “superconducting state.” Superconductivity can be destroyed if a sufficiently strong magnetic field is applied. A metal in this state has very unique magnetic properties that are unlike those at normal temperatures. A superconductor is often referred to as the perfect diamagnetic. Diamagnetic

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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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    Superconductivity: The Next Revolution?

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    Superconductivity: The Next Revolution? The discovery of high temperature superconductors in 1987 led to a revolution in the field of science and technology. The discovery of superconductors, their impact on advancement in the field of physics and their usefulness in today’s industry is the main theme of Professor Vidali’s book “Superconductivity: the next revolution? The author has thoroughly described the concept of superconductivity, the discovery of conventional superconductivity, the explanation

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    The purpose of this paper is to examine the materials, properties, and theory of superconductivity, a quantum phenomenon that occurs when a material is brought below a critical temperature and will conduct electricity without any resistance, the nearest model in nature to perpetual motion. According to Ecks (1990), Once current is applied to a superconducting material the current will continue in a closed lope without ever losing intensity. (Ecks, 1990) Superconductive materials can greatly vary

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    discovered that the resistance of mercury absolutely disappears at temperatures below about 4K. This phenomenon is called superconductivity; correspondingly, materials which have this property would be called superconductors. Because of this great discovery, in 1913, he won a Nobel Prize in physics for his research in this area. [2] The technological development of superconductivity was hampered by the cost of producing the extremely low temperatures required to achieve the effect. Until 1986, new superconducting

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    OHM´s Law and Magnetism

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    Ferro magnets, permanent magnets made from iron, copper, and cobalt, were first discovered by the ancient Greeks and Chinese, which they called lodestones and were turned into compasses by striking the “stones” against a steel tip. These compasses were then distributed to sea faring travelers such as C. Columbus and M. Polo, and around year 1600A.D. it was discovered by William Gilbert that the entire Earth harnessed a giant magnet from within by observing the compasses and how the north needle moved

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    Superconductors Essay

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    considered for simplicity and relevancy. Introduction and Background Superconductivity was first discovered a century ago in 1908 by Dutch physicist Heike Onnes[1] and is defined in classical physics as “perfect conductivity” or exactly zero electrical resistance (figure 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

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    Condensed Matter Physics

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    State Physics. Comparable to Astronomy, Solid State Physics is the oldest subcategory of what we now refer to as Physics. Condensed-matter physics is broader and applies to concepts that work in solids, but could equally be applied to liquids: superconductivity vs. superfluidity, and soft-condensed matter. Condensed Matter Physics has contributed properties of materials including electronic, magnetic, dynamical, mechanical, and thermo-dynamical properties of nanoscale systems and materials such as but

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