If there is a will, there is always light on the road to knowledge.

如果有毅力，在通往知识的道路上总有光。

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A booming voice is saying, 'Let there be light,' but there is already light. It is saying, 'Let the earth bring forth grass,' but I am already standing on grass.

一个洪亮的声音响起，“有光吧”，但是那已经有了光了，这声音又说“让地面长草吧”，但是我已经站在草地上了啊。

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The process is not entirely efficient, and there is a byproduct: an enormous amount of energy — radio waves, X-rays and regular light — hyper-illuminates the whole scene.

整个过程并不是特别有效率，而且还有副产品：一个庞大的能量团——无线电波，X射线和常规的光——高度照亮着整个区域。

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So this gives you a little bit of an idea of just how many individual photons there are in a laser beam of light. This is a huge number of photons.

这个给你们一点思路关于,一个激光束有多少独立的光子,这是一个巨大的光子数目。

麻省理工公开课 - 化学原理课程节选

So, what we would expect is that there is a relationship between intensity in kinetic energy because it was understood that however intense the light was, if you had a more intense light, it was a higher energy light beam.

光强和能量之间,应该有一定的关系,因为在我们的理解中,不管光强是多少，光的强度越大,光束能量越高。

麻省理工公开课 - 化学原理课程节选

There's a fear here that the ambition of this bid for paternal light is presumptuous, perhaps it's even satanic Satan of course in the next book, Book Four will have his invocation to light.

人们会担心弥尔顿认为光与上帝差不多的想法,过于胆大妄为，或许是极恶的,当然，第四卷里的撒旦,也会祈求光明。

耶鲁公开课 - 弥尔顿课程节选

Hopefully it is just a simple case of realization that there is a light at the end of the tunnel.

FORBES: Having A Recovery In The Warm California Sun

The good news is, there is a light at the end of the tunnel, and it is brighter than anyone could have imagined prior to September 11, and that is due to increased monetary and fiscal stimulus.

CNN: Diane Swonk: Consumer confidence

But telling just how small a given planet is depends on a relative measurement: how much light there is when the planet is and is not in front of the host star.

BBC: Exoplanet Kepler 37b is tiniest yet - smaller than Mercury