单词 | frequency |
释义 | frequency Symbol f or v. The rate of repetition of a regular event. The number of cycles of a wave, or some other oscillation or vibration, per second is expressed in hertz (cycles per second). The frequency (f) of a wave motion is given by f = c/λ , where c is the velocity of propagation and λ is the wavelength. The frequency associated with a quantum of electromagnetic energy is given by f = E/h , where E is the quantum's energy and h is the Planck constant |
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