A system and method for generating energy from tuning the natural frequency of masses relative to a ground plane and an external three. The acquired data of the tomosynthetic sectional images are processed to reconstruct a shift-and-add image by a shift-and-add processor. The selected logic zone corresponds to a data zone configured in a physical volume. The CPU takes in a current sound volume setting level when an upper-limit setting switch is activated, and it retains the taken-in level as an upper limit value of various sound volume setting levels that are to be used to change the displaying hue of the light-emitting diode between purple and red hues. The applicator pad assembly is operable to carry liquid and is flexible at least generally with the fingers so as to follow the contoured surface during liquid application.