I think most materials/objects, when you apply to them oscillating forces, they oscillate with specific intensity, according to the forces magnitude and frequency. But there is a specific combination of frequency that you make the material/object go crazy, i.e. oscillate with maximum intensity, which is the resonance frequency. I was thinking, do electrons of specific materials have such resonance frequency? Do solid or gas atoms/molecules have such resonance frequencies? Thanks!
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$\begingroup$ In English this is called "resonance" $\endgroup$– zeldredgeCommented Aug 24, 2016 at 13:39
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$\begingroup$ See de-Broglie wavelength for individual particles, and bond oscillation for molecules. $\endgroup$– hebetudinousCommented Aug 24, 2016 at 14:00
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2 Answers
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They have multiple resonance frequencies. Taking molecules for certainty, we can have:
- resonances associated with the molecule rotation about different axes
- resonances associated with molecule bending
- resonances due to the electronic excitations (this is also true for atoms)
- resonances due to the excitations within nuclei of the atoms
Depending on the type of molecule, some of these may be present to absent in the absorption/emission spectrum (depending on whether they couple or not to the EM radiation). The frequency increases from the top of the list to the bottom - rotational and vibrational resonances are often in radio or microwave range, electronic transitions in infrared and optical range, nuclear resonances in gamma range.
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Liquid water (H2O) resonance frequency is 13.56MHz.
