Light-emitting diodes are small glass lamps that use much less electricity than traditional bulbs and last much longer.

VOA: special.2009.12.21

We know that UV light gets absorbed by glass, so it shouldn't be able to go through the glass.

我们知道紫外光会被玻璃吸收，所以它无法通过玻璃。

麻省理工公开课 - 化学原理课程节选

but from the inside, you know, there's a lot of glass.And you can, like... There's a lot of natural light,

但是从里面看，有很多玻璃。这里有很多自然光，

伦敦的金融中心地 - SpeakingMax英语口语达人

He learned to get light to go far enough down a glass fiber to pass on signals.

VOA: special.2009.12.08

It is a glass tube. He wants to narrow the light so he puts a couple of slits here.

这是根玻璃管子，他想要减少光的发散,所以在这里开了几个口子。

麻省理工公开课 - 固态化学导论课程节选

I turned on a strong light under the glass and looked through the diamond lens.

VOA: special.2011.06.25

Mister Kao discovered how to transmit,or send,light signals over long distances through optical glass fibers.

VOA: special.2009.12.08