Lec 1 MIT 5.74 Introductory Quantum Mechanics II
so I'm gonna tell you about the spectroscopic Antonian okay we call that the effective Hamiltonian it's a matrix it's a fit model it represents everything that you can observe first diatomic molecule it is not the exact cameltoe a quantum chemist would not calculate that they could derive it if they chose to from what they can calculate but it's different in several important ways okay fundamental to the effective Hamiltonian is a separation of variables to nuclear variables and electronic Y that's called the born-oppenheimer approximation so we get electronic vibrational and rotational these are nuclear this is electronic [Music] No and now we're all out okay and so the born-oppenheimer approximation that allows us to make this separation nothing really allows us to make this separation what we do it what is it what is this separation good form well it enables us to approach the problem of a mini electron atom how many electrons molecules without ...