Lijeva strana Schrödingerova jednadžba:: ( − ℏ 2 2 m ∇ 2 + V ) ψ = ı ℏ ∂ ψ ∂ t {\displaystyle \left(-{\hbar ^{2} \over 2m}\nabla ^{2}+V\right)\psi =\imath \hbar {\partial \psi \over \partial t}}