Mechanical resonance Mechanical resonance Mechanical resonance is the tendency of a mechanical system to respond at greater amplitude when the frequency of its oscillations matches the system's natural frequency of vibration (its "resonance frequency" or "resonant frequency") than it does at other frequencies. It may cause violent swaying motions and even catastrophic failure in improperly constructed structures including bridges, buildings and airplanes. This is a phenomenon known as resonance disaster. Avoiding resonance disasters is a major concern in every building, tower and bridge construction project. The Taipei 101 building relies on a 660-ton pendulum—a tuned mass damper—to modify the response at resonance.
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