The wavefunctions above are eigenfunctions, so their probability density plots are independent of time. This is not the case for a superposition of eigenstates.
![[Graphics:../Images/index_gr_37.gif]](../Images/index_gr_37.gif){kind=small}
+ ![[Graphics:../Images/index_gr_38.gif]](../Images/index_gr_38.gif){kind=small}