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Hello, sorry to be picky, but isn't J_r = -(hk/m)|b|^2 at 8:32, so it's negative?
Jr should be negative I believe as i*i=-1
Hello, sorry to be picky, but isn't J_r = -(hk/m)|b|^2 at 8:32, so it's negative?
Jr should be negative I believe as i*i=-1