sat2物理题 if the velocity of light in a medium depends on its frequency, the medium is said to be
问题描述：
sat2物理题 if the velocity of light in a medium depends on its frequency, the medium is said to be
a coherentbrefractivec dispersiveddiffractive eresonant
答
dispersive,因为一般的光波frequency都是有一定的范围的,而不是一个固定的值,所以这个光波在Medium里就按不同freqency分散了(因为速度也不同了）.所以是 c.dispersive.
书上应该也有概念解释的吧.