frequency

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Understanding frequency and amplitude in sound

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Understanding frequency and amplitude in sound

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extremely low-frequency radiation angular frequency fundamental frequency natural frequency frequency band second harmonic mode third harmonic mode frequency meter stroboscope hertz radiation wave motion vibration phase absorption interference scattering wavenumber period Doppler effect

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Italian-born physicist Dr. Enrico Fermi draws a diagram at a blackboard with mathematical equations. circa 1950.

Physics and Natural Law