Global convection electric field and current : Comparisons
... component was southward and relatively steady over a prolonged period of time. The data set is thus representativeof a steady magnetosphericconvection. A semi-analytical time-dependent convection model is used to interpret the observations.During the daytime the model steady state results roughly re ...
... component was southward and relatively steady over a prolonged period of time. The data set is thus representativeof a steady magnetosphericconvection. A semi-analytical time-dependent convection model is used to interpret the observations.During the daytime the model steady state results roughly re ...
ITER_en - Site officiel de l`Association Savoir sans
... Later we will see how these machines work. In the JET, the magnetic field is supplied by non-superconducting solenoids. The field cannot therefore be maintained for more than a few seconds because of the heat emission resulting from the Joule effect. ...
... Later we will see how these machines work. In the JET, the magnetic field is supplied by non-superconducting solenoids. The field cannot therefore be maintained for more than a few seconds because of the heat emission resulting from the Joule effect. ...
Chapter 32
... that have nonzero internal resistances R1 and R2, respectively. Assume they are still far apart, so their mutual inductance is zero, and assume they are connected in series. Show that they are equivalent to a single inductor having Leq = L1 + L2 and Req = R1 + R2. (d) If these same inductors are now ...
... that have nonzero internal resistances R1 and R2, respectively. Assume they are still far apart, so their mutual inductance is zero, and assume they are connected in series. Show that they are equivalent to a single inductor having Leq = L1 + L2 and Req = R1 + R2. (d) If these same inductors are now ...
paramagnetic resonance of divalent europium in lead chloride
... and ua = 0.273, 02 = 0.663. In fig. 1 a lead ion of type Q is taken at the origin. The position of the surrounding ions is sketched in the planes (100) and (200). The point group at a Pbs+ site contains only two symmetry elements: the identity and the reflection through the bc plane. The point group ...
... and ua = 0.273, 02 = 0.663. In fig. 1 a lead ion of type Q is taken at the origin. The position of the surrounding ions is sketched in the planes (100) and (200). The point group at a Pbs+ site contains only two symmetry elements: the identity and the reflection through the bc plane. The point group ...
Application of the underscreened Kondo lattice model to neptunium
... compound, if we take the Kondo temperature TK equal to T ∗ of order 12 K, which is clearly much smaller than the Curie temperature TC =51.5 K. There is another ferromagnetic and Kondo neptunium compound, namely Np2 PdGa3 , which has been recently studied experimentally [3]. The magnetic resistivity, ...
... compound, if we take the Kondo temperature TK equal to T ∗ of order 12 K, which is clearly much smaller than the Curie temperature TC =51.5 K. There is another ferromagnetic and Kondo neptunium compound, namely Np2 PdGa3 , which has been recently studied experimentally [3]. The magnetic resistivity, ...
The origin of magnetism on the upper main sequence
... et al. 2002). Petit et al. (2008) have argued that 25 per cent of the massive stars (M > 20 M ) in the Orion Nebula have extremely high magnetic fields (B 1000 G), but it has also been noted that this cluster exhibits a highly abnormal massive star mass function (Pflamm-Altenburg & Kroupa 2006). ...
... et al. 2002). Petit et al. (2008) have argued that 25 per cent of the massive stars (M > 20 M ) in the Orion Nebula have extremely high magnetic fields (B 1000 G), but it has also been noted that this cluster exhibits a highly abnormal massive star mass function (Pflamm-Altenburg & Kroupa 2006). ...
A Diode Psychrometer for Remote Measurement of Screen Dry
... This procedure was adopted so that the diode thermometers would resemble the physical characteristics of a standard thermometer and to make it simple to mount them in the screen. Figure 3 shows the circuit used in the field. unit is the main component. ...
... This procedure was adopted so that the diode thermometers would resemble the physical characteristics of a standard thermometer and to make it simple to mount them in the screen. Figure 3 shows the circuit used in the field. unit is the main component. ...
ISWTalmadge1
... central electron temperature is predicted to be several hundred eV higher for the QHS mode than for the mirror configuration. However, at the reduced power and field strength of the present experiments, the effect of the radial electric field for the mirror configuration is to lower the neoclassica ...
... central electron temperature is predicted to be several hundred eV higher for the QHS mode than for the mirror configuration. However, at the reduced power and field strength of the present experiments, the effect of the radial electric field for the mirror configuration is to lower the neoclassica ...
PhysicsNotes v1.pdf
... 2 Kinematics in One Dimension....................................................................................................................... 10 2.1 Motion of an object in space - Define velocity & acceleration .............................................................. 10 2.2 Motion of on ...
... 2 Kinematics in One Dimension....................................................................................................................... 10 2.1 Motion of an object in space - Define velocity & acceleration .............................................................. 10 2.2 Motion of on ...
Solutions for conceptual questions
... As we have seen in problem 34.5 that the flux through the coil is the same as the flux through the solenoid cross section since the loop of the coil surrounds completely the solenoid.The solenoid’s magnetic field is parallel to the coil’s axis and creates a flux through the coil. This flux changes a ...
... As we have seen in problem 34.5 that the flux through the coil is the same as the flux through the solenoid cross section since the loop of the coil surrounds completely the solenoid.The solenoid’s magnetic field is parallel to the coil’s axis and creates a flux through the coil. This flux changes a ...
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.