We're at the center of this, you know, collapsing wavefront of light.

我们处于这束光的坍缩的中心，你知道的。

Just as before, by continuously changing the timing of when each wave peak is emitted by each antenna, we can change the angle at which the wavefront is formed, essentially steering the beam in one direction or another.

通过不断改变每个天线发射每个峰的时间，我们可以改变成的角度，从而基本上控制束朝一个方向或另一个方向。

More broadly, being able to record and reproduce an entire wavefront is just a useful tool to have in your belt for a variety of experiments.

更广泛地说，够记录和再现整个只是一个对你进行各种实验非常有用的工具。

Well, besides the fact that they occurred at just one radio pixel, the shape of the signal wavefront offered clues that they were coming from space.

， 了这些信号只出现在一个无线电像素之外，信号的状也提供了它们来自太空的线索。

You can also have a wavefront velocity, which  is how fast the first photon in a wave of photons can travel.

您还可以设置速度，即光子中第一个光子的传播速度。

But  the crowd itself isn't going anywhere, so our wave's true speed is 0. These people are the group  velocity, or possibly the wavefront velocity.

但是人群本身不会去任何地方，所以我们的的真实速度是 0。 这些人是群速度，或者可是速度。

If the muon was travelling slower than light  in the ice, there would be no wavefront, and all the expanding light spheres would  destructively interfere with each other, cancelling out to complete darkness.

如果μ子粒子在冰中的速度低于光速，就不会产生， 所有扩展的光球之间会发生破坏性干涉， 最终相互抵消，导致完全的黑暗。