And then in some places, as the light combines, it combines constructively and other places destructively.

然后在一些地方，当光线结合时，它会产生一些东西，而在其他地方则会破坏一些东西。

And just like in an opal, light is bent, waves combine constructively or destructively, and different flashes of color appear.

就像蛋白石一样，光线弯曲，光波结合的时候产生或破坏一些东西，从而出现不同的颜色闪光。

The places where the waves interfere destructively become shadows.

波浪破坏性地干扰的地方 变成了阴影。

And again, whether the light interferes constructively or destructively depends on how the rays line up.

同样，光是建设性干涉 还是破坏性干涉取决于光线的排列方式。

So light waves will interfere either constructively or destructively, depending on the size of this path difference.

因此，光波会产生建设性或破坏性干扰，具体取决于路径差异的大小。

Or more destructively, that they can't go to a normal schoolor hold a normal job or travel on their own.

AL：或者更具破坏性的是，他们无法上正常的学校或从事正常的工作或独自旅行。

But waves interfere DEstructively when one wave's crest run into the other wave's trough, and vice versa.

但是当一个波的波峰碰到另一波的波谷时，波会破坏性地干扰，反之亦然。

And, if ideas truly are more powerful than force, we should use them constructively and not destructively — in so far as that's possible.

而且，如果思想真的比武力更强大，我们应该尽可能建设性地使用它们，而不是破坏性地使用它们——可能会达到破坏性程度。

But when the waves are shifted by exactly half a wavelength — or by 1.5 wavelengths, or 2.5, and so on – light rays will interfere DEstructively.

但是，当波移动正好半个波长——或 1。5 个波长，或 2。5 个波长，等等——光线会破坏性地干涉。

We're interfering waves together, that's what interferometry means and so if those waves move back and forth a little bit when you interfere them they destructively interfere and you lose your signal.

我们正在一起干扰波，这就是干涉测量法的意思，所以如果这些波在你干扰它们时来回移动一点点，它们就会破坏性地干扰，你就会失去信号。