Abstract
This chapter contains additional topics of time-independent QM: Critically examinations of the ‘tunnel effect’ and ‘quantum leaps’, the occupation number representation (because of its relationship to the factorization of the classical Hamiltonian), energy versus (effective) extension, and the absence of ‘quantum states at rest’. I hope this helps the reader to grasp something more of the meaning of QM.
Keywords: Energy, Extension, Occupation number representation, Rest, Tunnel effect.