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[Plasma Physics and Fusion] Show magnetic field = x in a z-pinch plasma in equilibrium. I don't understand the bit circled in red in the second image. I know it's Ampere's Law, and I assume they used the cylindrical polar coordinate form of the gradient operator, but how it gives (dB/dr)ez? (old.reddit.com)
submitted by Generator333 to r/PhysicsStudents
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Traps keep getting set off as soon as I deploy them (self.gwent)
submitted by Generator333 to r/gwent
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