今天小编和大家分享一则
for instance，it may come as a shock to mathematicians to learn that the Schrodinger equation for the hydrogen atom is not a literally correct description of this atom，but only an approximation to a somewhat more
correct equation taking account of spin，magnetic dipole，and relativistic effects;and that this corrected equation is itself only an imperfect approximation to an infinite set of quantum field- theoretical equations。
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