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1 多普勒效应的理解新教材高中物理第二册 (必修加选修 )的第2 1页中有关多普勒效应是这样描述的“这种由于波源与观察者之间有相对运动 ,使观察者感到频率发生变化的现象 ,叫做多普勒效应” ,“在声源和观察者之间有相对运动时 ,声源 (如火车的汽笛声 )的频率并没有发生变化
1 Understanding the Doppler Effect The new textbook, High School Physics Book 2 (Compulsory plus optional), on page 2 of the Doppler effect is described as “this kind of observation due to the relative motion between the wave source and the observer. The phenomenon that the frequency changes is called the Doppler effect. "When there is relative movement between the sound source and the observer, the frequency of the sound source (such as the whistle of a train) does not change.