光在单轴晶体中传播时发生双折射现象时，两束折射光中的一束折射光恒遵守通常的折射定律，这束光称为寻常光(ordinarylight)，简称o光
然后论述了液晶的光学性质，寻常光和非寻常光在液晶中的传输，以及光散射问题。
The optical properties of liquid crystals, transmissions of ordinary and extraordinary light and light scattering in liquid crystals are described also.
这一不寻常的X射线和光发射的组合使它成为一个显著的对象。
The combination of this unusual X-ray and optical emission makes this a remarkable object.
这些材料有着超乎寻常的先进的能力，如使声和光绕过固体物质，进入到某种容器中使之隐形。
These materials have far-out capabilities, like bending sound and light around solid objects, and in some cases, making them invisible.
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