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【PHYSICS 物理學】：sound 聲音

1. frequency [ˋfrikwənsɪ] n. 頻率

Frequency is the rate at which a sound wave or radio wave vibrates.

2. wavelength [ˋwev͵lɛŋθ] n. 波長

A wavelength is the distance between a part of a wave of energy such as light or sound and the next similar part.

● band  波段

3. amplitude [ˋæmplə͵tjud]    n. 震幅

Amplitude is the maximum extent to which a particular vibration, oscilation, or wave differ from the average.

● wave crust  波峰

● wave trough 　波谷　

4. pitch [pɪtʃ] n. 音高

The frequency of a sound determines its pitch—the degree of highness or lowness of the sound as perceived by a listener.

5. intensity [ɪnˋtɛnsətɪ] n. 強度

The intensity of a sound is related to the amount of energy flowing in the sound waves.