![First results from ideal 2-D MHD reconstruction](http://s1.studyres.com/store/data/017511548_1-adc6482de0c1eeca16cb6920640524cd-300x300.png)
First results from ideal 2-D MHD reconstruction
... site, the resulting time dependence is probably not important for the reconstruction of a substructure such as the rotational discontinuity (RD). In the case of GS-based streamline reconstruction, a difficulty is that, in practice, there are usually remnant magnetic field components in the reconstru ...
... site, the resulting time dependence is probably not important for the reconstruction of a substructure such as the rotational discontinuity (RD). In the case of GS-based streamline reconstruction, a difficulty is that, in practice, there are usually remnant magnetic field components in the reconstru ...
An Introduction to Electronics for Advanced High School Students
... The objective of this thesis was to design and teach a short introductory course on electronics to advanced high school students. While many high school science classes have well-developed hands-on exercises to complement theory from lecture, high school physics classes often lack a significant hand ...
... The objective of this thesis was to design and teach a short introductory course on electronics to advanced high school students. While many high school science classes have well-developed hands-on exercises to complement theory from lecture, high school physics classes often lack a significant hand ...
Low Resistance Measurement
... then the voltage drop across them will result in insufficient voltage across the DUT (Device Under Test) to make a sensible reading. Cropico ohmmeters check this compliance voltage across the DUT and prevent a measurement from being made if it falls too low. A warning display is also provided; preve ...
... then the voltage drop across them will result in insufficient voltage across the DUT (Device Under Test) to make a sensible reading. Cropico ohmmeters check this compliance voltage across the DUT and prevent a measurement from being made if it falls too low. A warning display is also provided; preve ...
PHY 167 - Lehman College
... The accuracy of any measurement is limited. An uncertainty is our best estimate of how accurate a measurement is, while an error is the discrepancy between the measured value of some quantity and its true value. Errors in measurements arise from different sources: a) A common type of error is a blun ...
... The accuracy of any measurement is limited. An uncertainty is our best estimate of how accurate a measurement is, while an error is the discrepancy between the measured value of some quantity and its true value. Errors in measurements arise from different sources: a) A common type of error is a blun ...
Fine Structure of the Hydrogen Atom. Part I
... The hydrogen atom is the simplest one in nature, and the only one for which essentially exact calculations can be made on the basis of theory. The theoretical discussions now usually start with the Dirac equation for the motion of an electron in the pure Coulomb field of a fixed point charge. Correc ...
... The hydrogen atom is the simplest one in nature, and the only one for which essentially exact calculations can be made on the basis of theory. The theoretical discussions now usually start with the Dirac equation for the motion of an electron in the pure Coulomb field of a fixed point charge. Correc ...
1 Dielectric Properties of Polar Oxides Abstract 1.1 - Wiley-VCH
... in general αel is temperature-independent, and large atoms have a large electronic polarizability. • Ionic polarization is observed in ionic crystals and describes the displacement of the positive and negative sublattices under an applied electric field. • Orientation polarization describes the alig ...
... in general αel is temperature-independent, and large atoms have a large electronic polarizability. • Ionic polarization is observed in ionic crystals and describes the displacement of the positive and negative sublattices under an applied electric field. • Orientation polarization describes the alig ...
The birth of the electric machines: a commentary on Faraday (1832
... Michael Faraday was born in 1791 in Newington Butts, now in South London, but then no more than a village in rural Surrey. He was the son of a blacksmith who had moved down from Cumbria in northwest England just before Michael was born. His family were not well off and Faraday received a typical wo ...
... Michael Faraday was born in 1791 in Newington Butts, now in South London, but then no more than a village in rural Surrey. He was the son of a blacksmith who had moved down from Cumbria in northwest England just before Michael was born. His family were not well off and Faraday received a typical wo ...
Downloadable Full Text
... everywhere on the conduct is constant, thereby ensuring Gauss’ law is satisfied. If there is an imbalance in the potential, charges move and swap until the proper potential at the surface is reached. Nature, of course, accomplishes this nearly instantaneously but the rules that guide the distributio ...
... everywhere on the conduct is constant, thereby ensuring Gauss’ law is satisfied. If there is an imbalance in the potential, charges move and swap until the proper potential at the surface is reached. Nature, of course, accomplishes this nearly instantaneously but the rules that guide the distributio ...
Zahn, M. and H.A. Haus, Contributions of Prof. James R. Melcher to Engineering Education, Journal of Electrostatics 34, pp. 109-162, March 1995
... he set for himself and them. He has deeply affected the lives, careers, and values of his students and colleagues. This paper will describe his major contributions to engineering education, as course innovator and lecturer, and as research supervisor. It will also briefly describe his personal quali ...
... he set for himself and them. He has deeply affected the lives, careers, and values of his students and colleagues. This paper will describe his major contributions to engineering education, as course innovator and lecturer, and as research supervisor. It will also briefly describe his personal quali ...
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.