Superconductors & physicist Essay Example for Free

topnotch theater directors physicist testSuperconductivity was discovered by a Dutch physicist Kammerlingh Onnes in 1911 while studying resistivity of mercury at low temperature (Halliday 1999). To his surprise he found that below a temperature of about 4K mercury suddenly disconnected all its resistivity that was named by him as a superconductor. Conductors atomic number 18 those substances through which electricity pass to a larger extent. Superconductors are conductors that lose their resistance at a very low temperature.Every conductor possesses resistivity up to a certain extent whereas superconductors lose their resistivity at low temperature. Superconductors are conductors with zero resistance. Functions and Applications Nowadays superconductors are used by scientists in making different things like upset reduction filters, communication satellites, mobile signal receivers, and other sophisticated and important machines which are extremely reusable to us. Extensive researches are being carried out to design superconductors and ceramics to be used future for communication engineering science (Klauda 2000).Several experiments are conducted to stag the possibility of cryogenic and gamy-temperature superconductor technology for use in base transceiver station (BTSs) and communication satellites for global mobile communication (Klauda 2000). Super conductors has helped a lot in the medical business line by saving and diagnosing a lot of disorders in the human body like introducing MRI(magnetic ring imaging) in which image is made of the inner delicate parts of the human body such as brain, stomach etc (Uses for Superconductors).Super conductors have as well played a major role in march on the transport system by replacing the huge electromagnets with super conducting magnets so making it faster. A crack operating on super conducting magnet attained an unbelievable speed of 361 mph (Uses for Superconductors). Electric generators tranquil of super conductors are of great importance because they are much better than the ordinary and typical generators. Super conducting generators produce much more electricity than ordinary generators.Nowadays efforts are made to commercialize these generators in order to fulfill the energy need of the world. Nowadays superconducting transformers have also been introduced to the world. In some countries undercover cables including copper are replaced by superconductors making it more efficient than ordinary copper cables. Modern calculations reveal that supper conducting cables are 7000% efficient than ordinary copper cables (Uses for Superconductors).It is believed that in the next decade superconductors will replace electric appliances in which copper is used. Super conductors are also used in industry to make radical high performance filters. Future of Superconductors Superconductors are of high utility in the future. Beside benefits there are also some drawbacks of using supercond uctors on a larger scale. Superconducting magnets are hazardous to human health thus restricting the commercial usage of MAGLEV vehicles (Uses for Superconductors).Another hitch in the wide usage of superconductivity is its high cost that for several decades restricted the functions of superconductors. Since superconductivity is attainable only at a very low temperature that is achieved in a bath of liquid helium. Since helium is found in very little quantity in the atmosphere is therefore, extremely costly limiting the functionality. After decades of hectic research, liquid nitrogen has replaced helium dense the cost to a greater extent.ReferencesHalliday, David. (1999). Physics (Vol.2 Extended Version, 4th Ed).Robert Resnick, Kenneth S Krane. John. John Wiley Sons, Inc. New York Klauda, Matthias. (July 2000). Superconductors and cryogenics for Future Communication Systems. Tobias Kasser, Bernd Mayer, Christian Neumann, Frank Schnell, Bachitor Aminov, Arno Baumfalk, Heinz Chalou pka, Serguei Kolesov, Helmut Piel, Norbert Klein, Stefan Schornstein, and Martin Bareiss. IEEE Transactions on Microwave Theory and Techniques, vol. 48, no. 7, 1227 Uses for Superconductors. Accessed fearful 19, 2008 http//superconductors. org/Uses. htm