A new paper published in the journal Physical Review Research provides experimental support for the hypothesis that hand ...
In the mid-1850s, Hermann von Helmholtz invented these spherical resonators in order to identify the qualities of single tones contained in multi-tone sounds. The narrow end of the sphere would be ...
See: EIGENTON, HELMHOLTZ RESONATOR, RESONANCE, RESONATOR. Compare: ACOUSTIC RADIATION. For instance, various body cavities and organs may be set in VIBRATION by INFRASONIC vibration and low frequency ...
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