Schrödinger's equation

[noun]

A partial differential equation developed by Erwin Schrodinger that describes the change of the quantum state of a physical system over time. The equation correctly predicts the parameters of the energy levels of atomic orbitals, and can be used to generate probability maps for the s, p, d and f orbitals:
iℏ (∂/∂t) Ψ = HΨ
where i is the imaginary unit, ℏ is Planck’s constant over 2Π, t is time, H is the Hamiltonian operator, and Ψ is the wave-function.