Resonator Resonator A resonator is a device or system that exhibits resonance or resonant behavior, that is, it naturally oscillates at some frequencies, called its resonant frequencies, with greater amplitude than at others. The oscillations in a resonator can be either electromagnetic or mechanical (including acoustic). Resonators are used to either generate waves of specific frequencies or to select specific frequencies from a signal. Musical instruments use acoustic resonators that produce sound waves of specific tones. Another example is quartz crystals used in electronic devices such as radio transmitters and quartz watches to produce oscillations of very precise frequency. A cavity
Metaphor therapy a psychological ground on which movement can occur, and this freedom of movement is the aim of therapy. By linking different things, metaphors aim at conceptual change through new insight, involving re-categorization of experience along new lines of meaning. Metaphorical interpretation of life, rather than analogical, combines the past with what is new. The transference relationship is thought of as an example of metaphor, a kind of symbolic translation of earlier strivings to present-day circumstances, as opposed to a re-enactment, which would lose the creative power of the metaphor and be merely analogic. The use of metaphor therapy in psychotherapeutic