用计算平均值的方法导出自旋

Deduction of spin by way of calculating average value

用计算平均值的方法导出自旋李光惠（襄阳师范专科学校物理学系，湖北襄樊４４１０５３；作者，男，５４岁，副教授）乌仑贝克和哥德斯密特为了解释碱金属原子光谱的精细结构和斯特恩一盖拉赫实验，提出·了电子具有自旋的假设；后来，在狄拉克建立的相对论运动方程中，顺...

in the classical motion equation, the correspondent physical quantity is substituted by the average. In order to keep the motion law and symmetry constant. It's inevitable that the spin, a free dimension appears, which micro particle owns imherently.