In this video I will explain the quantum mechanics simple harmonic oscillator instead of the classical mechanics simple harmonic oscillator (see previous video). The difference between them is in quantum mechanics the energy quantized. Meaning the energy in the oscillator must have specific values. Energy values E0, E1, E2, E3, E4 are associated with levels n=0, n=1, n=2, n=3, n=4, and so forth.