**4.3. The atom and nanovoid as two entities of an antenna processin a crystal**

Thus, the action of the photon antenna in the crystal may be considered a reversible movement of the particle from its equilibrium position (for example, the lattice's site) into a nanovoid, and this nanovoid is forbidden from being steadily filled in by the symmetry of placement of the neighbor particles. This nanovoid pushes out the particle resulting in photon absorption in the initial position. If this cycled process is accompanied by the absorption and radiation of the photon, it may be considered an antenna process.
