A circular loop of wire is in a region of spatially uniform magnetic
... next to a long straight wire. The current I in the long straight wire is decreasing. The circular loop will be A. attracted to the long wire and the induced current is clockwise B. repelled away from the long wire and the induced current is counterclockwise C. attracted to the long wire and the indu ...
... next to a long straight wire. The current I in the long straight wire is decreasing. The circular loop will be A. attracted to the long wire and the induced current is clockwise B. repelled away from the long wire and the induced current is counterclockwise C. attracted to the long wire and the indu ...
Ligand Field Strengths and Oxidation States from Manganese L
... of crystal field effects with splittings due to multipole 2 p 3 d and 3d-3d interactions. For the MnT13dSion, the 6Satomic ground state is determined by the multipole 3d-3d interactions, either factorized in Slater integrals (F2,F4) or alternatively in Racah parameters (B,C). The 6Satomic ground sta ...
... of crystal field effects with splittings due to multipole 2 p 3 d and 3d-3d interactions. For the MnT13dSion, the 6Satomic ground state is determined by the multipole 3d-3d interactions, either factorized in Slater integrals (F2,F4) or alternatively in Racah parameters (B,C). The 6Satomic ground sta ...
Physics 3 Revision GUide
... The outer core of the Earth is _____________. The mantle and the inner core are __________ . Only ___ waves can travel through the liquid outer core. By measuring 'P' and 'S' waves after an earthquake at different points across the globe, we can estimate the size of the Earth's liquid outer core. P ...
... The outer core of the Earth is _____________. The mantle and the inner core are __________ . Only ___ waves can travel through the liquid outer core. By measuring 'P' and 'S' waves after an earthquake at different points across the globe, we can estimate the size of the Earth's liquid outer core. P ...
Understanding of heavy mineral separation duties using
... The first magnetic separator to be considered is the rare earth roll (RER) which is commonly 100 mm or so in diameter. The RER consists of rare earth magnetic plates that are magnetized along the rotational axis direction of the RER. These are sandwiched in between thinner plates of magnetisable ste ...
... The first magnetic separator to be considered is the rare earth roll (RER) which is commonly 100 mm or so in diameter. The RER consists of rare earth magnetic plates that are magnetized along the rotational axis direction of the RER. These are sandwiched in between thinner plates of magnetisable ste ...
Chapter 3 (Lectures 7
... relatively slowly, they do rotate, and this leads to weak internal thermal imbalances that cause a slow large-scale flow inside the star known as meridional circulation (see for example Mestel 1999, chap. 9, or Tassoul 2007, chap. 4). These flows will almost certainly substantially distort any initi ...
... relatively slowly, they do rotate, and this leads to weak internal thermal imbalances that cause a slow large-scale flow inside the star known as meridional circulation (see for example Mestel 1999, chap. 9, or Tassoul 2007, chap. 4). These flows will almost certainly substantially distort any initi ...
Generation of highly energetic electrons at
... Context. During solar flares a large amount of energy is suddenly released and partly transfered into energetic electrons. They are of special interest since a substantial part of the energy released during a flare is deposited into the energetic electrons. RHESSI observations, e.g. of the solar eve ...
... Context. During solar flares a large amount of energy is suddenly released and partly transfered into energetic electrons. They are of special interest since a substantial part of the energy released during a flare is deposited into the energetic electrons. RHESSI observations, e.g. of the solar eve ...
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.