And remember: when waves of light are shifted by half a wavelength, that means one wave's crests line up with the other's trough, causing destructive interference.
当光波移动半个波长时，这意味着一个波的波峰与另一个波的波谷对齐，从而导致相消干涉。
Crest line
原声例句
Crash Course Physics 速成课物理
英语百科
Ridge
A ridge or mountain ridge is a geological feature consisting of a chain of mountains or hills that form a continuous elevated crest for some distance. Ridges are usually termed hills or mountains as well, depending on size. There are several main types of ridges:-
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