Silsbee's rule - Transition between superconducting and normal (resistive) state due to magnetic field, for a type I superconductor (soft superconductor). The value of Hc denotes critical magnetic field (H - magnetic field, M - magnetisation).
After: Preeti Maheshwari, Electronic Components and Processes, New Age International, 2006, ISBN 9788122417944, p. 119-120
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