Engineering Studies Notes
... › Engineering stress – the original C.S.A is used to calculate the stress for every value of the applied force › Working stress – The actual or constantly changing C.S.A value is used to calculate the stress Yield stress, proof stress, toughness, Young’s Modulus, Hooke’s law, engineering application ...
... › Engineering stress – the original C.S.A is used to calculate the stress for every value of the applied force › Working stress – The actual or constantly changing C.S.A value is used to calculate the stress Yield stress, proof stress, toughness, Young’s Modulus, Hooke’s law, engineering application ...
Biot-Savart Law, Gauss`s Law for magnetism, Ampere
... The mscript cemB03.m can be used to find the magnetic field in the XY plane (z = 0) at the centre of a set of 1 to 4 conductors that are aligned in the Z direction. When the distance between a measurement point P and the wire approaches zero, the magnetic field strength approaches infinity. This can ...
... The mscript cemB03.m can be used to find the magnetic field in the XY plane (z = 0) at the centre of a set of 1 to 4 conductors that are aligned in the Z direction. When the distance between a measurement point P and the wire approaches zero, the magnetic field strength approaches infinity. This can ...
On the origin of the fast solar wind in polar coronal funnels
... is generated and replenished continuously in the upper chromospheric network. Thus there will be outflow across the whole funnel area with a varying flow speed profile at the top cross section of the funnel, since all the field lines there are open. For convenience and to keep the model simple we sh ...
... is generated and replenished continuously in the upper chromospheric network. Thus there will be outflow across the whole funnel area with a varying flow speed profile at the top cross section of the funnel, since all the field lines there are open. For convenience and to keep the model simple we sh ...
Characteristic properties of two-dimensional superconductors close
... the high transition temperatures enhance the influence of thermal fluctuations in the superconducting phase of such compounds. The phase transition between the superconducting and the normal state in a strictly two-dimensional superconductor in the absence of an external magnetic field is driven by ...
... the high transition temperatures enhance the influence of thermal fluctuations in the superconducting phase of such compounds. The phase transition between the superconducting and the normal state in a strictly two-dimensional superconductor in the absence of an external magnetic field is driven by ...
Electronics Technology Fundamentals
... Outside force can cause an electron to leave its orbit -atom is referred to as a positive ion Outside force can cause an atom to gain an electron -atom is referred to as a negative ion ...
... Outside force can cause an electron to leave its orbit -atom is referred to as a positive ion Outside force can cause an atom to gain an electron -atom is referred to as a negative ion ...
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.