I am a beginner in quantum mechanics. I started out with D. J. Griffiths' book in quantum mechanics. I'm having a problem in understanding the wave function. What is the physical meaning of the wave function? I searched on the net but didn't get any good explanation. I understand that the square of the wave function represents probability density. I also understood the normalisation of wave function, but what is the wave function by itself? How can I experimentally find a wave function?