下列说法正确的是     A.泊松亮斑有力地支持了光的微粒说,杨

下列说法正确的是    

A.泊松亮斑有力地支持了光的微粒说,杨氏干涉实验有力地支持了光的波动说。

B.在地球上如果测到来自遥远星系上的元素发出的光波波长变长,说明该星系在离我们远去

C.当波源或者接受者相对于介质运动时,接受者往往会发现波的频率发生了变化,这种现象叫多普勒效应。

D.考虑相对论效应,一条沿自身长度方向运动的杆,其长度总比杆静止时的长度小

 

答案

BCD

解析:略

 

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