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Resonante Systemenergie

In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures (or forms, [1] also variously known as resonance structures or canonical structures) into a resonance hybrid (or hybrid structure) in valence bond theory.

Why are resonant systems able to concentrate energy?

So the reason resonant systems are able to concentrate this energy is by the particular structure of these systems. These systems are characterized by their resonant or natural frequency, they can easily admit energy from outside the system, and the structure is such that dissipative forces are minimized.

What is a resonant system?

Resonant systems can be used to generate vibrations of a specific frequency (e.g., musical instruments), or pick out specific frequencies from a complex vibration containing many frequencies (e.g., filters).

What is a resonant frequency?

However, there are some losses from cycle to cycle, called damping. When damping is small, the resonant frequency is approximately equal to the natural frequency of the system, which is a frequency of unforced vibrations. Some systems have multiple, distinct, resonant frequencies. Pushing a person in a swing is a common example of resonance.

How symmetric is a resonant frequency?

The exact response of a resonance, especially for frequencies far from the resonant frequency, depends on the details of the physical system, and is usually not exactly symmetric about the resonant frequency, as illustrated for the simple harmonic oscillator above.

What is an example of a resonant vibration?

For example, when hard objects like metal, glass, or wood are struck, there are brief resonant vibrations in the object. : p.2–24 Light and other short wavelength electromagnetic radiation is produced by resonance on an atomic scale, such as electrons in atoms. Other examples of resonance include:

What is resonance energy?

Resonance energy (RE) was historically the first energy-based attempt to quantify aromaticity. In general all these methods are based on the additional stability that characterizes aromatic compounds.