  It is known that the Schroedinger equation may be derived from a hydrodynamic
model in which the Lagrangian position coordinates of a continuum of particles
represent the quantum state. Using Routh\s method of ignorable coordinates it
is shown that the quantum potential energy of particle interaction that
represents quantum effects in this model may be regarded as the kinetic energy
of additional concealed freedoms. The method brings an alternative perspective
to Planck\s constant, which plays the role of a hidden variable, and to the
canonical quantization procedure, since what is termed kinetic energy in
quantum mechanics may be regarded literally as energy due to motion.
