So, for every valley there is a peak, and for every peak, a valley.

对应原声的谷，新声会有个，而对应其，新声会有个谷。

See, sound waves, like light waves, have peaks and valleys.

声跟光样，有和谷。

They have a trough and a crest, and consist not of moving water, but the movement of energy through water.

它们有谷和，并不流动的水，而水的能量运动。

When one wave's peak met another's trough, though, the light's intensity would fall.

然而，当个的到另个的谷时，光的强就会下降。

That is to say, the crests of one set of waves may coincide with the troughs of the other set.

也就，组的可能与另组的谷重合。

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

但当个的碰到另的谷时，会破坏性地干扰，反之亦然。

So the wave is basically a peak that moves from being a crest to a trough and vice versa

所以浪个，它从存在改变 顶点到谷，反之亦然。

Waves interfere constructively when the crests of both waves end up in the same spot, and so do their troughs.

当两个的最终在同个位置时，会产生建设性的干扰，它们的谷也如此。

Change it enough, and you'll reach a point where the crests match the valleys, making the waves cancel each other out — that's destructive interference.

改变得够多，就会达到某个点，让对上谷，让彼此抵消——那就相消（破坏性）干涉。

These pressure variations can be modeled by a sine wave, where the peaks represent increased pressure and the troughs represent decreased pressure.

这些压力变化可以通过正弦建模，其中代表压力增加而谷代表压力降低。

Sometimes the peaks line up to produce a louder sound, and when a peak lines up with a trough, they cancel out.

有时排列在起会产生更大的声音，而当与谷排列在起时，它们就会抵消。

If the peak of one ripple hits the valley of a  second ripple, they will subtract each other, producing a flat surface.

如果个纹的碰到第二个纹的谷，它们会相互抵消，产生个平坦的表面。

Crest to trough a single such wave could take more than a decade to pass through our solar system, despite moving at the speed of light.

从到谷——尽管以光速来移动，单个引力要用十多年才能穿过我们的太阳系。

So the crests of different light waves combine, and so do the troughs, forming one wave with a higher amplitude.

所以不同光的结合，谷也结合，形成个振幅更高的。

The light that the cascade produced is of the same wavelength, with the peaks and troughs of the light waves fluctuating in unison.

级联产生的光具有相同的长，光的和谷致动。

However, phase shifting would be seen as breaking up the waves' locations of the peaks and the troughs within a set of wavelengths.

然而，相移会被视为破坏组长内的和谷的位置。

We can look at the spacing between the ripple crests as well as the amplitude or the height from the crest to the trough.

我们可以观察之间的间距以及到谷的幅或高。

And when a wave is out of phase by 180 degrees, it's destructive, with the crests and troughs cancelling each other out.

当相位相差 180 时，它具有破坏性，和谷相互抵消。

However, you can certainly identify and measure specific characteristics of a wave pattern as a whole, most notably, its wavelength, which is the distance between two consecutive crests or troughs.

然而，你当然可以识别和测量个型的特定特征作为个整体，最显著的它的长，它两个连续或谷之间的距离。

When the waves are an exact number of wavelengths apart, the crests and troughs will line up – creating constructive interference and a bright line.

当相隔定数量的长时，和谷将对齐——产生相长干涉和条亮线。