介绍普朗克通过对不均匀介质中几何光学方程与经典静态守恒力场中自由质点运动方程的对比从而引入量子力学定态薛定谔方程的理论.
The theory about how Planck presenting the stationary Schrdinger equation by the analogy between geometrical optics equations in non-homogeneous bodies with fundamental equations of classical mechanics for a free particle,which moves in a given static conservative field of force,is introduced.