What is Resonant frequency: Definition and 97 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. B

    Finding the Resonant frequency in an LC circuit

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  2. S

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    Does anyone know why the resonant frequency of a grounded human is smaller when ungrounded?
  3. Crazymechanic

    Is there a material that exhibits resonant frequency for magnetic flux?

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  4. D

    Resonant Frequency & Natural Frequency?

    Hello guys! Is it possible to convert a natural frequency to resonant frequency with maybe some kind of formula? I was given a transfer function and I was asked to draw a root locus plot and determine the resonant frequency. I know how to get the damping ratio and natural frequency and the value...
  5. R

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    The question is as follows, How do you determine the frequency at which different types of molecules resonate to, such as water molecules to microwaves?
  6. F

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  7. X

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  8. H

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  9. M

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  10. J

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  11. A

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  12. N

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  13. B

    Help with resonant frequency in ACC

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  14. D

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  15. D

    Relationship Between Tension And Resonant Frequency.

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  16. H

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  17. E

    Power Factor and Resonant Frequency

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  18. M

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  19. A

    Resonant frequency of an annular ring? Hookes Law?

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  20. M

    What is the Earth's natural resonant frequency?

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  21. S

    Resonant frequency vs Natural frequency

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  22. M

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  23. H

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  24. I

    What is the formula for determining the resonant frequency of drums?

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  25. F

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  26. K

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  27. X

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  28. P

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  29. Q

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  30. K

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  31. I

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  32. I

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  33. M

    Resonant Frequency of a Cantilever

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  34. V

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  35. N

    Resonant frequency and circumference of spheres

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  36. P

    Does Component Configuration Affect Resonant Frequency Calculation?

    When calculating the resonant frequency of a circuit, does it matter whether or not the components in that circuit are in series or in parallel? Say...for a simple circuit with three components in series with a voltage source (a resistor, an inductor and a capacitor for example). The resonant...
  37. V

    Parallel RLC circuit: find resonant frequency and Input at that frequency

    Homework Statement In the circuit below, find the resonant frequency (\omega_0) and Z_{IN}\left(\omega_0\right). http://img143.imageshack.us/img143/9845/problem1444dx4.jpg Homework Equations \omega_0\,=\,\frac{1}{\sqrt{LC}} The Attempt at a Solution The resonant frequency is easy to find...
  38. R

    Resonant frequency of millimetric objects

    Hello everyone! First post here! I have quite a specific question. I am investigating resonant frequency of biological matter with dimensions of about 1mm cubed. What I would like to know is... 1) does anyone know of any good journals which look into resonant frequencies of small...
  39. J

    Resonant frequency calculation for lengths of thick wall steel pipe

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  40. M

    Calculating Resonant Frequency of a Soda Bottle

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  41. J

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  42. K

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  43. O

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  44. J

    Changing Resonant Frequency of Gas?

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  45. C

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    Hello, I have a question on resonant frequencies. Everyone knows the example of breaking a wine glass by singing an extended note at the resonant frequency of that glass. My question is: Can other objects be "broken" by this same process? For example, is it possible to produce the...
  46. petmar

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  47. sheldon

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