  As a substitute for the current hypothesis of space-time continuity, we show
the nature and the characteristics of a Schild's discrete space-time. With the
wave perturbations of its metrical structure we formulate the working
hypothesis that all subatomic particles are elementary sources of spherical
waves constituting on the whole the mass fields, the electromagnetic and the
nuclear field we attribute to the particles. The explicative effectiveness of
the new wave unification between quantum mechanics and general relativity is
shown by a wave interpretation of three experimental phenomena that lie
different physics: astrophysics, optics and quantum physics. A further use of
wave Compton effect leads us to discover a mechanism of wave resonance which is
able to verify the possible existence of a source of elementary waves that
shows a wave model of electron and all the particles. The wave nature of masses
and the generalized effect of a Relative Symmetry Principle leads us to
consider the inertia as a local consequence of the wave structure of bodies.
The same changeable wave model used for explaining inertia it is also valid to
show a quantized gravitational interaction and the wave nature of gravity.
