Schrodinger Equation is the very first step when we start learning QM. However, I never learnt about the physical meaning of it. I have read a number of articles and discussion online. Regarding the ones I understand, there are generally two points of view. 1. Fundamental physical laws are not understandable but only accepted. Just like F=ma, we generally accept the definition of this physical quantity and develop our classical mechanical theory. The same applies to SE. We can only accept it and to develop our physics on it. 2. The Schrodinger Equation try to describe things (e.g. electrons) in a way similar to the classical wave theory. SE provides us a way to calculate the wave function. If 1 is the way we see SE, I am wondering how Schrodinger could come up with that equation which is so much complicated than F=ma. Or in other words, I can believe that Newton can invent F=ma only by imagination but not SE. If we interpret SE like 2 does, what is the physical meaning of each detail variable and constants? I saw a lot of articles only give qualitative arguments. How is the wave function relates to ħ, and how do we relate the SE to classical wave theory? Sometimes it is discouraging if I only focus on the math. Solving the PDE and ODE for several hours to obtain the wave functions of, say Hydrogen atom, seems to do nth with physics, if I don't even have a sense of the SE.