IOSR Journal of Mathematics (IOSR-JM)
... have been relatively inconsistent at times controversial and present theories do not fully explain the mechanisms of the elevated thermal conductivity and convection heat transfer performance. This was observed by Keblinski et al (2008). MHD is the branch of science that studies the behavior of an e ...
... have been relatively inconsistent at times controversial and present theories do not fully explain the mechanisms of the elevated thermal conductivity and convection heat transfer performance. This was observed by Keblinski et al (2008). MHD is the branch of science that studies the behavior of an e ...
Unipolar induction: a neglected topic in the teaching of
... Received 4 December 1998, in final form 4 March 1999 ...
... Received 4 December 1998, in final form 4 March 1999 ...
INTO THE PAGE
... through two regions containing uniform magnetic fields of magnitudes B1 and B2. Its path in each region is a half-circle. The directions of the two fields are: A. Both B1 and B2 are directed into the page. B. Both B1 and B2 are directed out of the page. C. B1 is directed into the page and B2 is dire ...
... through two regions containing uniform magnetic fields of magnitudes B1 and B2. Its path in each region is a half-circle. The directions of the two fields are: A. Both B1 and B2 are directed into the page. B. Both B1 and B2 are directed out of the page. C. B1 is directed into the page and B2 is dire ...
Design and Implementation of a Magnetic Levitation System Using
... appliances, such as a multi-meter, can alter the system response. High frequency noise is supply and thermal noise in amplifier can cause disruption too. The supply voltage for the system should be a pure dc source. Total implementation cost is remarkably reasonable from the perspective of economy i ...
... appliances, such as a multi-meter, can alter the system response. High frequency noise is supply and thermal noise in amplifier can cause disruption too. The supply voltage for the system should be a pure dc source. Total implementation cost is remarkably reasonable from the perspective of economy i ...
Spin-Orbit Coupling of Conduction Electrons in
... reflected in the shape of the pattern in figure 2 where lobes are distorted towards 45 degrees. At 0 degree the conduction electron spin is parallel to the current, so few electrons suffer spin-orbit deflection, while at 90 degrees many spins electron experience spin-orbit deflection but the s-d exc ...
... reflected in the shape of the pattern in figure 2 where lobes are distorted towards 45 degrees. At 0 degree the conduction electron spin is parallel to the current, so few electrons suffer spin-orbit deflection, while at 90 degrees many spins electron experience spin-orbit deflection but the s-d exc ...
Magnetic Field Measurement to Detect and Locate Underground
... with appropriate algorithms that can distinguish between the field of the target cable and that of other interfering sources so that power cables can be accurately located and mapped. In addition, in order to save the search cost and time, the further requirements are to scan the ground surface at t ...
... with appropriate algorithms that can distinguish between the field of the target cable and that of other interfering sources so that power cables can be accurately located and mapped. In addition, in order to save the search cost and time, the further requirements are to scan the ground surface at t ...
Word for Windows
... AD590 has been proposed for the thermostatic control and temperature monitor due to its simple use and its prompt availability. In the data sheets (ref.1 and 2) its rated performance temperature range is stated from -55°C to 150°C, with a note that it can be extended to 100°C with some degradation o ...
... AD590 has been proposed for the thermostatic control and temperature monitor due to its simple use and its prompt availability. In the data sheets (ref.1 and 2) its rated performance temperature range is stated from -55°C to 150°C, with a note that it can be extended to 100°C with some degradation o ...
Superconductivity
Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature. It was discovered by Dutch physicist Heike Kamerlingh Onnes on April 8, 1911 in Leiden. Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It is characterized by the Meissner effect, the complete ejection of magnetic field lines from the interior of the superconductor as it transitions into the superconducting state. The occurrence of the Meissner effect indicates that superconductivity cannot be understood simply as the idealization of perfect conductivity in classical physics.The electrical resistivity of a metallic conductor decreases gradually as temperature is lowered. In ordinary conductors, such as copper or silver, this decrease is limited by impurities and other defects. Even near absolute zero, a real sample of a normal conductor shows some resistance. In a superconductor, the resistance drops abruptly to zero when the material is cooled below its critical temperature. An electric current flowing through a loop of superconducting wire can persist indefinitely with no power source.In 1986, it was discovered that some cuprate-perovskite ceramic materials have a critical temperature above 90 K (−183 °C). Such a high transition temperature is theoretically impossible for a conventional superconductor, leading the materials to be termed high-temperature superconductors. Liquid nitrogen boils at 77 K, and superconduction at higher temperatures than this facilitates many experiments and applications that are less practical at lower temperatures.