All motion stops at a depth equal to half the wavelength.

所有运动都停止在等于波长一半的深度。

Before, with both a string fixed at both ends, and an open pipe, the fundamental spanned half a wavelength.

以前，两端固定一个和弦，一个开放的双簧管 从两端看，基本面延伸至半波以上。

So, for the fundamental of a string with two fixed ends, the length of the string is equal to half a wavelength.

所以，有两个固定端的基弦， 弦长等于波长的一半。

The rays passing through the middle third and bottom third of the slit will be half a wavelength apart, so they'll cancel each other out.

通过狭缝中间三分之一和底部三分之一的光线将相隔半个波长，因此它们会相互抵消。

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。

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。

So a total path difference of a full wavelength means that for each light ray coming through the slit at that angle, there's a corresponding light ray that's shifted by half a wavelength.

因此，全波长的总路径差意味着对于以该角度穿过狭缝的每条光线，都有一条相应的光线偏移了半个波长。

If the path difference is one wavelength long, then the path difference between the light from the top of the slit and the light from the center of the slit is only half a wavelength.

如果光程差是一个波长长，那么来自狭缝顶部的光与来自狭缝中心的光之间的光程差只有半个波长。