Lecturefour.doc

Lecture four
一、Translate the following academic words into Chinese。
disturbance wave electromagnetic wave
sound wave propagate transfer
density longitudinal wave compression wave
Standing waves transverse wave pulse
Wavelength
frequency trough peak
emit source Doppler effect
pitch Interference Coherent Wave
二、Write the following quantities of meaning in chinese and to represent the physical symbol,formula.
wave Function
speed of a sinusoidal wave
general Doppler-shift expression

三、Translate the following sentences into Chinese。
Waveis a process of propagation of vibration.