Description of the ground state of a molecule with delocalized electrons as an average of several Lewis structures. The actual ground state doesn't switch rapidly between the separate structures: [..]

The state of a system in which an abnormally large vibration is produced in response to an external stimulus, occurring when the frequency of the stimulus is the same, or nearly the same, as the natur [..]

mid-15c., in acoustics, "prolongation of sound by reverberation;" 1660s, "act of resonating;" from Middle French resonance (15c.), from Latin resonantia "echo," from reso [..]

When several strings are tuned to harmonically related pitches, all strings vibrate when only one of the strings is struck.

A state in which an orbiting object is subject to periodic gravitational perturbations by another.

resonance is the tendency of a mechanical or electrical system to vibrate or oscillate at a certain frequency when excited by an external source, and to keep oscillating after the source is removed. I [..]

n. The quality of being able to reinforce sound by sympathetic vibrations.

adj. Able to reinforce sound by sympathetic vibrations.

In an electrical circuit, the condition that exists when the inductive reactance and the capacitive reactance are of equal magnitude, causing electrical energy to oscillate between the magnetic field of the inductor and the electric field of the capacitor. Note 1: Resonance occurs because the collapsing magnetic field of the inductor generates an e [..]

Term in chemistry used to explain properties of the octet rule when a single Lewis structure is inadequate. Resonance structure is an average of two of more Lewis structures which differ only in the p [..]

  A state where the natural frequency of a body equals an applied frequency.

The full quality of a voice created by vibrations in resonating chambers, such as the mouth and sinus areas.

Forced vibration of a true single DoF system causes resonance when the forcing frequency equals the natural frequency. More complex systems have many resonances.

Sympathetic resonance is a harmonic phenomenon wherein a formerly passive string or vibratory body responds to external vibrations to which it has a harmonic likeness.

A wave effect that occurs when an object has a natural frequency that corresponds to an external frequency.

A vibration of large amplitude in a mechanical or electrical system caused by a relatively small periodic stimulus of the same or nearly the same period as the natural vibration period of the system. [..]

(1) The inducing of vibrations of a natural rate by a vibrating source having the same frequency. (2) The condition in an a-c circuit in which the inductive reactance and capacitive reactance are equa [..]

When the frequency of an external force matches the natural frequency and standing waves are set up

Electromagnetic wave patterns formed due to superposition of oncoming and reflected waves, leading to very high rates of heating. Resonance can occur inside a food for specific combinations of size, shape, and food property.

(n) an excited state of a stable particle causing a sharp maximum in the probability of absorption of electromagnetic radiation(n) a vibration of large amplitude produced by a relatively small vibrati [..]

The state in which one object vibrates at or near the frequency of another, causing the second object to vibrate (Lessons 20, 21)

The vibratory response of an acoustic system to input energy. An area of high intensity in the spectrum of a sound.

when sounds of specific frequencies cause air- or fluid-filled organs to vibrate with amplitudes that are large compared to the amplitude of incoming soundwaves

Peak frequency response characteristic of AC-driven circuit.

when the vibrations of a substance, such as the wood of a violin, correspond to the air vibrations which make the sound.

    A circuit condition when the inductive reactance (XL) equals the capacitive reactance (XC).  A resonant circuit is one that has been tuned to that condition and resonant frequency is that frequency that resonance occurs in a circuit and provides a maximum output for one of its circuit variables.

Resonance occurs when the frequency of excitation is equal to the natural frequency of the system. When this happens, the amplitude of vibration increases and is only limited by the amount of damping present in the isolation system.

A forced vibration phenomenon which exits if any small change in frequency of the applied force causes a decrease in the amplitude of the vibrating system.

The lower end of the frequency response spectrum (bass tones) is heavily influenced by the resonance (pitch) of the speaker. If you tighten a drum it raises its resonance. This same effect is achieved in a speaker by stiffening its cone suspension. A speaker with good resonance features good bass response without bottoming out (rattling or vibratin [..]

The acoustic disposition of physical bodies and enclosures to promote energy at one or more frequencies or bands of frequencies. The resonance characteristics of bodies (for example violins or oboes) are important features by which listeners are able to identify these instruments. Resonances may be emulated through the use of filters.

A reinforcement of signal caused when the incoming frequency is equal to the natural frequency of the acoustic or electrical system which it passes through.

In the context of chemistry, the term refers to the representation of the electronic structure of a molecular entity in terms of contributing structures. Resonance among contributing structures means that the wavefunction is represented by "mixing" the wavefunctions of the contributing structures. The concept is the basis of the quantum m [..]

Illustrated Glossary of Organic Chemistry Resonance: (1) A condition in which molecular structure cannot be adequately represented by a single Lewis structure; two or more Lewis structures are require [..]

A technique applicable to the wide variety of substances which exhibit paramagnetism because of the Magnetic moments of unpaired Electrons. The spectra are useful for detection and Identification, for [..]

A Biosensing Technique in which biomolecules capable of binding to specific analytes or Ligands are first immobilized on one side of a metallic film. Light is then focused on the opposite side of the [..]

Resonance is the covibration of an oscillatory system. If the excitation frequency f is close to the Natural frequency f0 of the system being excited, this results in resonance. The vibration amplitud [..]

The state of a system in which an abnormally large vibration is produced in response to an external stimulus, occurring when the frequency of the stimulus is the same, or nearly the same, as the natural vibration frequency of the system.

The ability of a material to vibrate significantly from a relatively small amount of input energy. Resonance occurs when the input energy is acting at close to the natural frequency a material.

the tendency of an object to vibrate most at a particular frequency.

A natural frequency of vibration determined by the size and shape of an object.  For example, shorter guitar strings resonate at a higher frequency than longer guitar strings.

The state of a system in which an abnormally large vibration is produced in response to an external stimulus, occurring when the frequency of the stimulus is the same, or nearly the same, as the natur [..]

1) The effect produced when the natural vibration frequency of a body is greatly amplified by reinforcing vibrations at the same or nearly the same frequency from another body. 2) The prolonging of th [..]

The frequency at which the capacitance and inductance reactances in a circuit are equal and cancel, leaving only the resistance of a circuit. The condition in a circuit containing inductance and capac [..]

A condition in which a quantity reaches maximum value. In electrical circuits, it is a condition in an RLC circuit in which the magnitude of the voltage or the current becomes a maximum or the circuit becomes purely resistive.

A condition of oscillation caused when a small amplitude of periodic input has a frequency approaching one of the natural frequencies of the driven system. Further Reading

The natural frequency at which a physical body will oscillate. An example is when you blow gently across the top of a bottle, the enclosed air resonates at a frequency determined by the internal volume. Also refers to the natural resonance of loudspeaker drivers, cabinets and ports, or the frequency where an inductance and capacitance have the same [..]