In my physical chemistry course, we are learning about the Schrödinger Equation and were introduced to the Hamiltonian Operator recently. We started out with the simple scenario of a particle in 1D space. Our professor's slide showed the following "derivation" to arrive at the expression for the kinetic energy component of the Hamiltonian (see attachment).(adsbygoogle = window.adsbygoogle || []).push({});

I do not understand how the professor arrived at the eigenfunction-eigenvalue equation for the kinetic energy involving Planck's constant. I understand that kinetic energy is equal to momentum squared divided by twice the mass, of course, but nothing beyond that in the slide. If someone could explain this, I would appreciate it. Please note that I am not a physics major, so any mathematics more advanced than calculus may be beyond me (I do understand operators and eigenfunctions, however).

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# Question about the Hamiltonian Operator

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