What is Resonance: Definition and 656 Discussions

Resonance describes the phenomenon of increased amplitude that occurs when the frequency of a periodically applied force (or a Fourier component of it) is equal or close to a natural frequency of the system on which it acts. When an oscillating force is applied at a resonant frequency of a dynamic system, the system will oscillate at a higher amplitude than when the same force is applied at other, non-resonant frequencies.Frequencies at which the response amplitude is a relative maximum are also known as resonant frequencies or resonance frequencies of the system. Small periodic forces that are near a resonant frequency of the system have the ability to produce large amplitude oscillations in the system due to the storage of vibrational energy.
Resonance phenomena occur with all types of vibrations or waves: there is mechanical resonance, acoustic resonance, electromagnetic resonance, nuclear magnetic resonance (NMR), electron spin resonance (ESR) and resonance of quantum wave functions. 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).
The term resonance (from Latin resonantia, 'echo', from resonare, 'resound') originated from the field of acoustics, particularly the sympathetic resonance observed in musical instruments, e.g., when one string starts to vibrate and produce sound after a different one is struck.

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  1. A

    Is this an allowed solution? - 2nd order harmonic oscillation

    It is true that at resonance frequency the phase-shift between input and output is 90 degrees, so my mind would think that this is ok. But I am kind of unsure because of the whole dividing by zero part. If this isn't allowed: is there any way to calculate/measure the damping coefficient with...
  2. Another

    1-D wave resonance in the case of an Open-Ended String

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  3. K

    What is the governing equation of a spring with sinusoidal excitation?

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  4. dRic2

    Resonance escape probability after a change in temperature

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  5. PSuran

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  6. nineteen

    What tutorial for Resonance structures?

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  7. Edge5

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  8. N

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  9. lia256

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  10. N

    Does resonance always affect acidity and basicity?

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  12. M

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  13. john-b

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  14. E

    A Electron spin resonance in metals

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  15. S

    A Question about Helmholtz resonance

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  16. G

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  17. Krushnaraj Pandya

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  18. W

    What factors influence a material's natural frequency?

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  19. S

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  20. R

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  21. I

    I Invariant mass plots for resonance 'particles'

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  22. C

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  23. R

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  24. Bassam Shehadeh

    A Nuclear size at resonance states

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  25. F

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  26. H

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  28. janiceyyyyyy

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  29. E

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  31. S

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  32. ForumGuy

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  33. entropy1

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  34. D

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  36. Nick Amos

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  38. D

    I Physics -- Need help understanding the concept of resonance please

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  41. W

    RLC Circuits - Q Factor and Amplitude

    Homework Statement Imagine you have two RLC circuits you are trying to scan for resonances. They have identical resonant frequencies, but circuit 1 has a very high Q-factor (Q1 >> 1), and circuit 2 has a very low Q-factor (Q2 < 1). Let's assume you are already on resonance and looking at V(out)...
  42. S

    I Vibrations of astronomical bodies

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  43. B

    Driven resonance v. natural resonance

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  44. O

    Resonance absorbtion of neutrons

    Hi, As you may know, the following equation gives the number of neutrons absorbed per cm3/sec in a resonance region. Fa=Φav∫∑a(E) dE So, it is said in Lamarsh, introduction to nuclear engineering, that Φav depends on temperature. I do not get this because I know that the flux is something we...
  45. P

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  46. P

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  47. J

    NAD+ / NADH Question: Absorption peaks and spectra

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  48. DaveC426913

    B Resonance in large objects, say a cruise liner

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  49. S

    What is meant by natural frequency?

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  50. T

    B Resonance relationship with glass shatter

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