Okay. So you have this concentrated light source.

好的。所以你有这个集中的光源。

I think you've got to have as many light sources in a room as possible.

房间里光源越多越好。

Having a convenient light source changed people's lives.

便捷的光源改变了人们的生活。

Many light sources around us reveal secrets through the spectroscope.

我们周围的许多光源通过分光镜揭示秘密。

You have one shadow because our primary light source on Earth is our sun.

你只有一个影子，是因为地球的光源是太阳。

Just think how much we rely on man-made light sources in our lives.

想想我们在生活中对人造光源的依赖程度。

While sunlight contains every wavelength, scientists discovered that every chemical element and compound contains a unique pattern of wavelengths that allows scientists to determine the composition of light sources.

虽然太阳光包含各种波长，但科学家发现每种化学元素和化合物都包含独特的波长模式，这使科学家能够确定光源的组成。

In fact, you experience a closer light source as four times more powerful than that same light source twice the distance away from you.

事，你会觉得一个近距离的光源比同样距离远一倍的光源强四倍。

This sort of low-energy focused white beam could be used for the very small — like a light source for microscopes — to the very big.

这种低能聚焦白色光束既可以应用于显微镜光源这种小物件，也可以应用到场合。

Most of these scenes are rendered using hundreds of thousands of these point light sources, and as you can see, the results are unbelievable.

这些场景的都使用了数以十万计的点光源，而正如你所看到的，结果令人难以置信。

Such films permitted researchers to study in detail how dragonflies circle endlessly around light sources, positioning themselves with their backs facing the light.

这类影片使研究人员能够详细研究蜻蜓是如何在光源周围无休止地旋转的以及它们是如何背对着光源定位的。

Martin Jotov says the result is a light source that can be produced in mass quantities on a sheet of plastic.

马丁·乔托夫说，这带来的结果是人们可以在一片塑料制造量光源。

The train car turned pitch black as it barreled through a tunnel. Ember was the only light source in the train.

列车开进隧道，车厢里漆黑一片，小焰成了唯一的光源。

The astute among you might point out that it also matters a lot where the light source is.

你们当中的精明人士可能会指出 ，光源的位置也很重。

Rockefeller knows if he can frighten the public, kerosene will continue to be the dominant light source.

洛克菲勒知道 只他能吓坏公众 煤油就能继续保持光源的统治地位。

Because not a single light source had formed yet.

因为此时的宇宙还没有形成单个光源。

When we use our phones were staring directly into a light source and how much light falls onto a certain area like our eyes, usually measured in lux is dramatically impacted by our closeness to the device.

当我们使用手机时，我们直接盯着一个光源，光线落在某个区域（如我们的眼睛）的量，通常以勒克斯（lux）为单位测量，会因我们与设备的距离而显著变化。

To take this effect into consideration, this technique also has an intuitive feature where the effect of virtual light sources is also simulated, and the output is changed interactively as we tilt the tablet around.

考虑到这一点，这项技术还提供了一项非常直观的功能，就是虚拟光源的效果也被考虑在模拟算法中，而且输出的显示效果会随着平板电脑的倾斜而变化。

They occur at the end of a massive star's lifespan, when a titanic explosion takes place, creating a light source which can easily outshine most of the stars around it.

超新星爆发是最具毁灭性危险的宇宙爆炸，它发生在巨的星体到达生命末期时，这时会发生剧烈的爆炸发出让周围多数恒星失色的强烈的亮光。

Insects do not fly directly toward a light source, but actually " tilt their backs toward the light, " said Sam Fabian of Imperial College London.

伦敦帝国理工学院的萨姆·法比安表示，昆虫不会直接飞向光源，而际是“背对着光源”。