This paper gives the proof of this rule, and applies this rule to calculate the transition probability of the emission and absorption of light.
本文给出了这一规则的证明，并应用此规则计算了光的发射与吸收的跃迁几率。
2
We educe a probability of the electric quadrupole emission of a photon induced by collision between two neutral atoms of inert gases.
文章导出一种由两个中性的惰性气体原子之间的碰撞引起的电四极辐射几率。
3
The neutron emission width, the fission width and the realization probability for one neutron emission and their relation with excitation energy and angular momentum are also presented.