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superconductor    音标拼音: [s'upɚkənd,ʌktɚ]
n. 超导体

超导体


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  • EE: How to heat a magnet with a wire while levitating a superconductor . . .
    Levitating a superconductor seems like an odd way of measuring the temperature dependence of a magnet's B field You can do the same thing, I think, with a piece of iron (not superconducting) How about substituting a Hall-effect sensor for the superconductor?
  • Electric field inside a Superconductor - Physics Forums
    The discussion centers on the behavior of electric fields within superconductors, specifically referencing the book "Superconductivity" by James Arnett It is established that the electric field inside a superconductor is always zero due to the infinite conductivity (\ (\sigma \rightarrow \infty\)) The implications of applying an external time-varying electric field are examined, concluding
  • Does a type I superconductor have to be single crystal?
    A type I superconductor does not have to be a single crystal; polycrystalline structures are acceptable Grain boundaries in polycrystalline materials act as scattering sites for electrons but do not fundamentally prevent superconductivity, as explained by BCS theory The critical temperature (Tc) may vary with polycrystalline materials, but it is not definitively lower; for example, aluminum
  • Why some metals are not superconductors? • Physics Forums
    Hello, I'm studying about superconductivity So far I understand that the material needs have zero resistance and meissner effect to be a superconductor But why materials such as copper or gold are not superconductors? I think it's something to do with some quantum effect like cooper
  • Is Current in Superconductors Truly Infinite? - Physics Forums
    The discussion revolves around the behavior of current in superconductors, particularly the implications of zero resistance and the concept of infinite current Participants explore theoretical scenarios, the limitations imposed by critical current density, and the relationship between current and electron motion in superconductors Some participants propose that since superconductors have
  • Can You Create Your Own Superconductor at Home with Basic Chemistry . . .
    The discussion revolves around the feasibility of creating superconductors at home using basic chemistry knowledge Participants explore various types of superconductors, including high-temperature superconductors (HTSCs) and low-temperature superconductors, while considering the necessary materials, equipment, and safety concerns involved in the synthesis process Some participants question
  • How is current induced in superconductors? • Physics Forums
    Discussion Overview The discussion centers around the induction of current in superconductors, particularly in the context of superconducting magnets and the role of resistance and inductance in the circuit Participants explore theoretical aspects, practical implications, and the behavior of currents in superconducting systems Discussion Character Exploratory Technical explanation Conceptual
  • Liquid Superconductors: Experiments and Possibilities - Physics Forums
    The discussion centers on the exploration of liquid superconductors, particularly the potential for superconductivity in non-solid states High-temperature superconductors such as bismuth strontium calcium copper oxide (BSCCO) and yttrium barium copper oxide (YBCO) suggest that superconductors may exist beyond conventional Bardeen-Cooper-Schrieffer (BCS) theory The highest recorded
  • Ideal conductor vs superconductor - Physics Forums
    The most "obvious" difference between a superconductor and an ideal conductor is that the former expels all magnetic fields when it goes through the superconducting transition A perfect conductor would just "freeze" the field, but in an ideal superconductor (well, in a type I at least) the field is always zero
  • Current in a Superconducting Loop • Physics Forums
    It is not possible to induce a current loop in a superconductor (except in type II where loops can be forced in) In persistent mode magnets, a short section of conductor is made normal and a voltage is applied, current is pumped in, and then the conductor is made superconducting again





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