  Using the kinematic constraints of classical bodies we construct the
allowable wavefunctions corresponding to classical solids. These are shown to
be long lived metastable states that are qualitatively far from eigenstates of
the true Hamiltonian. Extensions of this give an explicit description of phonon
oscillations in terms of the wavefunction itself and some consequences for the
general validity of the quasiparticle picture are presented. An intrinsic
theory of quantum measurement naturally arises based on Schr\"{o}dinger
evolution that is local, consistent with relativity and extends to the case of
noninertial and deformable measurement devices that can have time changing
internal properties. This theory agrees with the Born interpretation in the
limit of static measuring devices. Care is given to the transport of conserved
quantities during measurement.
