Okay. So you have this concentrated light source.

好。所以你有这个集中光。

Having a convenient light source changed people's lives.

便捷光改变了人们生活。

Many light sources around us reveal secrets through the spectroscope.

我们周围许多光通过分光镜揭示秘密。

Because not a single light source had formed yet.

因为此宙还没有形成单个光。

“Real” colors are basically colors that can be produced by a physical light source.

“真实”颜色基本可以由物理光产生颜色。

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

你只有一个影子，因为地球主要光太阳。

Other elements, like sight lines, mirrors, and light sources describe the moment through space and position.

其他元素如视线、镜子和光描述了当下空间和位置。

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

洛克菲勒知道 只要他能吓坏公众 煤油就能继续保持光统治地位。

With a convenient light source, people were able to work longer which led to even more technological innovation.

有了方便光，人们就能够工作更久，从而带来了更多技术革新。

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

你们当中精明人士可能会指出 ，光位置也很重要。

Torches are just one of several light sources Stone Age artists used to navigate caves.

火把只石器代艺术家用来在洞穴中航行几种光之一。

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，这带来结果人们可以在一片塑料制造大量光。

Its angle means that it will reflect light from the light source towards our view.

它角度意味着它会将来自光光反射到我们视野中。

I always start off by thinking, where is the light source, where is it coming from.

我总从思考开始， 光在哪里， 它来自哪里。

Which is replacing Thomas Edison's incandescent bulb as the the light source of the 21st century.

它正在取代托马斯爱迪生白炽灯泡成为 21 世纪光。

Whether or not the light source is moving.

光否在移动。

Third, many plants live in environments where their leaves are not exposed to nighttime light sources.

第三，许多植物生活在叶子不暴露在夜间光环境中。

We could also add a built-in light source to help students study at night or in low-light conditions.

ZZQ：我们还可以添加一个内置光，以帮助学生在夜间或弱光条件下学习。

That type of light source is best suited for large spaces that get plenty of airflow, the researchers say.

研究人员说， 这种类型光最适合气流充足大空间。

They also measured how far away these light sources could be and still illuminate the walls.

他们还测量了这些光在距离多远仍能照亮墙壁。