resonance
  • noun a situation where a frequency applied to a body which is the same as its natural frequency causes it to oscillate with a very large amplitude
  • noun the property of a chemical compound having several possible structural arrangements of electrons in a molecule.
  • Time coincidence of astronomical importance, e.g. between the orbital periods of satellites or between rotational periods are entrenched by the repeated periodic action of gravitation. Resonances abound in the solar system. The most obvious is the way in which the Moon revolves on its axis in exactly the same time period as it takes to orbit the Earth, so that we only see one face of the Moon from the Earth. Other resonances are now being discovered throughout the solar system including the many responsible for the Kirkwood Gaps, and the ratio of three to two between the orbital periods of Pluto and Neptune.
  • The condition in which a circuit, body, or system exhibits enhanced vibration or oscillation at a given frequency, called resonant frequency. There are many examples, including acoustic, atomic, beam, magnetic, and spin resonance.
  • The condition in which a circuit, body, or system exhibits enhanced vibration or oscillation when acted upon by an external force which is at or near the resonant frequency of said circuit, body, or system.
  • The condition in which the amplitude or intensity of a phenomenon is enhanced at frequencies or energies which are at or near a given value.
  • The condition in which the response of a circuit or system is enhanced when the driving signal is at or near the resonant frequency of said circuit or system. Also, the condition of exhibiting maximum response at said frequency.
  • The condition in which of acoustic waves are intensified at certain frequencies due to resonance (1). Also called acoustic resonance (1).
  • The condition in which an object close to a sound source vibrates along with said source.

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