When exploring resonant frequency, it's essential to consider various aspects and implications. Does resonance still occur at half, a quarter, etc. The pulsed driving force can be Fourier-analysed into a sum of sinusoidally varying forces at the pulse frequency and multiples of it. One of these multiples or 'harmonics' will be at the swing's natural frequency, so we can, if we wish, regard the pulsed pushing as giving true resonance after all – at the swing's natural frequency.
acoustics - Does the human body have a resonant frequency? A definition of human natural frequency in terms of vibration magnitude is proposed." The analysis of the experimental results of this paper lead to an important conclusion made by the authors that this resonant frequency is amplitude depended in some extend thus it can vary depending the amplitude of the mechanical vibrations. What is the resonant frequency of liquid water?. The frequency 2.45 GHz corresponds to one of liquid water molecules' rotational mode transition energies.
For more information, I find Wikipedia article very instructive. To understand all the phenomenon, try to learn about resonance, rotational modes, absorption spectrum and dielectric loss. Equally important, acoustics - How would I go about finding the resonant frequency of a .... Furthermore, the resonant modes of big sheet of glass will be in the low frequency range, 100Hz and lower. A rectangular sheet will exhibit a spread of different modes because a range of different wavelengths can be fit onto it.
How does a driving frequency induce resonance if it is not exactly .... Systems can be driven to large amplitudes by a "near resonant" driving force if the sharpness (a.k.a. "Q") of the system is low. This is because a low Q resonator has a broadened resonant peak which responds to a spread of frequencies to either side of resonance and not just to the exact frequency of resonance.
Resonating frequencies of atoms - Physics Stack Exchange. I have a mathematics and computer science background with very little physics. I have read that the resonating frequency of an atom of some element is always exactly the same as the resonating freq... Are resonance and resonant frequency the same? Building on this, - Physics Stack Exchange.
From another angle, a system may support many resonant frequencies, and driving the system at any of those frequencies would be cause resonance. That is, 1 system can have many resonances, each of which is associated with a resonant frequency. Phase difference of driving frequency and oscillating frequency. If a driving force is applied, it must be at the same frequency as the mass' oscillation frequency. However I'm told that the phase difference between the driving frequency and the mass's frequency must be $\frac {\pi} {2}$.
I would have thought they should have to be in phase to be in resonance? Does every object, every particle and every thing have it's own .... I'm wondering, since an electron has a resonant frequency, and so does a system of water molecules, brick, person, and planet; how would an incoming vibrational wave of infinite 'Q' (so basically it has a very accurate and narrow bandwidth resonant frequency) tell the difference between two objects of the same resonant frequency? Resonate frequency of an object?
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