The molecular extinction coefficient is equal to the ratio of the log of the intensity of the incident and emergent light. 分子的消光系数等于入射光和透射光强度对数的比。
At zero intensity, the last glimmer of the light vanishes into the atoms, and the polariton comes to a dead stop. 到了控制光强度归零之时，光的最后一丝光芒都消逝到原子里，极化声子就完全停止了。
