A microcavity discharge device generates radiation with wavelengths in the range of from 11 to 14 nanometers. The omni-directional image navigator includes a first touch area and a direction control area constituted by a second touch area adjacent to the first touch area. The concrete mix and pigmentation material are then moved to a mixer which mixes them together. The actuator applies a force capable of deflecting the beam structure and moving the mirror to one of the extended positions or the retracted position and the beam structure returns the mirror to the other of the extended position or the retracted position in the absence of the application of force.