然后，我们用石英方解石测量作为位置函数的方向，石英方解石对光的影响这取决于光线的传播方向。
We then used a quartz calcite, which has an effect on light that depends on the direction the light is propagating, to measure the direction as a function of position.
在实验室中，研究人员可以在光线传播通过空间时，对光的波峰稍作调整来造成发送光线的速度比极限的速度限制更快的印象。
In the lab, researchers can create the impression of sending light faster than the speed limit by tweaking the speed at which the wave crests of light propagate through space.
这一现象是指光线在时空中传播的过程中由于大质量物质的引力而发生弯曲，这也是爱因斯坦的广义相对论所预言的。
This phenomenon, predicted by Einstein's theory of general relativity, causes light to curve as it flies through space-time that has been dented by the gravity of large bodies of mass.
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