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Fast Computation of the Series Impedance of Power Cables with
... fully developed [3, 11, 12, 13]. Techniques based on the finite element method (FEM) [14, 8, 15] fully predict proximity effect at both low and high frequencies, but they tend to be excessively time-consuming because of the fine mesh required to properly discretize the cross section. A similar issue ...
... fully developed [3, 11, 12, 13]. Techniques based on the finite element method (FEM) [14, 8, 15] fully predict proximity effect at both low and high frequencies, but they tend to be excessively time-consuming because of the fine mesh required to properly discretize the cross section. A similar issue ...
Abstract poster Presentation
... atoms [1] has that are much longer that in bulk gold. The observation of these long interatomic distances have been attributed to the existence of an impurity atom or molecule [2] inserted between two gold atoms, which are invisible in electron microscopy imaging due to its lower atomic number. In w ...
... atoms [1] has that are much longer that in bulk gold. The observation of these long interatomic distances have been attributed to the existence of an impurity atom or molecule [2] inserted between two gold atoms, which are invisible in electron microscopy imaging due to its lower atomic number. In w ...
슬라이드 1 - UCSB C.L.A.S.
... When connected in a circuit with a resistor, an inductor will have the effect of slowing down changes in the current through the resistor. When the current is steady (the switch has been closed for a long time), the inductor has no effect, but there is potential energy stored in the inductor. ...
... When connected in a circuit with a resistor, an inductor will have the effect of slowing down changes in the current through the resistor. When the current is steady (the switch has been closed for a long time), the inductor has no effect, but there is potential energy stored in the inductor. ...
Lecture 7. Electromagnetic Fields. Maxwell`s Equations
... Forces between two electrically-charged objects can be extremely high. Most things are electrically neutral, they have equal amounts of positive and negative charge. If this was the case, the world we live in would be a much stranger place. We also have a lot of control over how things get charged. ...
... Forces between two electrically-charged objects can be extremely high. Most things are electrically neutral, they have equal amounts of positive and negative charge. If this was the case, the world we live in would be a much stranger place. We also have a lot of control over how things get charged. ...
1 Pc2 EMIC waves generated high off the equator in the dayside 2
... mapped back to the equator. This passes through the wave emission band and supports the deduction that the waves were generated off the equator. The continuous signals at 250 mHz are due to satellite spin period interference. We also note that the Pc2 waves present an obvious burst-like pattern whic ...
... mapped back to the equator. This passes through the wave emission band and supports the deduction that the waves were generated off the equator. The continuous signals at 250 mHz are due to satellite spin period interference. We also note that the Pc2 waves present an obvious burst-like pattern whic ...
1 1-0
... Figure 1.1.1(b). The movie linked to Figure 1.1.1 shows this behavior for the two directions of current. In the action at a distance model this behavior requires nothing more than the current carrying-current wires and the empty space between them. And indeed the space between the wires does appear ...
... Figure 1.1.1(b). The movie linked to Figure 1.1.1 shows this behavior for the two directions of current. In the action at a distance model this behavior requires nothing more than the current carrying-current wires and the empty space between them. And indeed the space between the wires does appear ...
Ballistic electron focusing by elliptic reflecting barriers
... reflectivity of the barrier. A strong reduction is noticed in the strength of the first TMF peak, expected to appear at B '0.038 T. The inset to Fig. 2 shows a TMF spectrum recorded for a device similar to Fig. 1 but lacking the elliptic focusing barrier. Five clear peaks are visible, at the positio ...
... reflectivity of the barrier. A strong reduction is noticed in the strength of the first TMF peak, expected to appear at B '0.038 T. The inset to Fig. 2 shows a TMF spectrum recorded for a device similar to Fig. 1 but lacking the elliptic focusing barrier. Five clear peaks are visible, at the positio ...
Thursday, Sept. 8, 2011
... • Why does this make sense? • Since from a far distance, the two charges are very close so that the overall charge gets close to 0!! • This dependence works for the point not on bisector as well ...
... • Why does this make sense? • Since from a far distance, the two charges are very close so that the overall charge gets close to 0!! • This dependence works for the point not on bisector as well ...
Document
... forces gives rise to a condition in space known as an electromagnetic field. The characteristics of an electromagnetic field are expressed mathematically by Maxwell's equation. Vector A directed line segment. As such, vectors have magnitude and direction. Many physical quantities, for example, veloc ...
... forces gives rise to a condition in space known as an electromagnetic field. The characteristics of an electromagnetic field are expressed mathematically by Maxwell's equation. Vector A directed line segment. As such, vectors have magnitude and direction. Many physical quantities, for example, veloc ...
Study of Electronic and Magnetic Properties of Cobalt
... attracted broad interest in the scientific community. That is because of their exciting physical properties, which are mainly derived from the fact that they have zero band gap energy at the Fermi K points. At these K points, also known as Dirac points, the energy E versus wave-number k is linear fo ...
... attracted broad interest in the scientific community. That is because of their exciting physical properties, which are mainly derived from the fact that they have zero band gap energy at the Fermi K points. At these K points, also known as Dirac points, the energy E versus wave-number k is linear fo ...
Superconductivity
![](https://commons.wikimedia.org/wiki/Special:FilePath/Meissner_effect_p1390048.jpg?width=300)
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.