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Superconductivity is the complete loss of electrical resistance in certain materials when cooled below a specific temperature, known as the transition temperature. Type I superconductors are characterized by their response to magnetic fields. When a magnetic field below a critical value (Hc) is applied to a type I superconductor, it expels the magnetic field from its interior. This phenomenon is called the Meissner effect. If the magnetic field exceeds the critical value, the material reverts to its normal, non-superconducting state. The critical field strength varies with temperature and material composition.123

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