Pauli's Exclusion Principle
In Our Time: Science
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The Exclusion Rule
In 1924, Pauli introduced a rule that finally gave a solution to problems that had beset physicists for decades. By introducing what Graham was referring to as this classically known describable to valueness and exclusion rule, he could solve at once both the problem of spectroscopic anomaly because we now need the electron spin to make sense of the spectroscopicomaly. He didn't call it spin. And by calling classically known describe described in terms of two-valueness,. people that came after him introduced the term of electron spin. All of a sudden, some anomalies could be explained and the foundations of quantum mechanics could begin.
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