It all starts with how we perceive brightness.

这一切都源于我看待光。

The doctor says your eyes can't be exposed to any light.

医生说你眼睛不能暴露在光下。

A large retina collects more light, more visual information.

巨大视网膜能收集更多光和视觉信息。

If anything, try to expose yourself to warm, dim light before bed.

果有可能话，尽量让自己在睡前处于暖和暗色调光之下。

To paint not objects in light, but the light itself.

他不描绘光中物体 而是光本身。

And that red light is just scattered light in the camera optics.

那条红色光只是相机 光学部件散射出光。

Far below me, the ground fell away and down to a river.

远远地，在我下方，地面（仿佛在随光）向下延伸，（逐渐）退落，显露出谷底河流。

So, it's what happens when you have no light reflected back to the viewer.

所以，它就是一种没有光从物体上反射回来现象。

That helps to spread the light around.

这有助于光扩散。

Reading in dim light does harm to the eyes.

在昏暗光下看书对眼睛有害。

Scientists have created metamaterials to guide rays of light around tiny, two-dimensional objects.

科学家已经制造出超材料能引导光微小二维物体。

I began to walk about the room, examining various indefinite objects in the half darkness.

我开始在屋子里随便走走，在半明半暗光中看看各种各样模糊不清摆饰。

It must have been a trick of the light.

一定是光问题。

Vision depends on light entering the eye...a form of ocular intromission, if you will.

视觉依赖于进入眼睛光，果你不介意这种说法话，这是一种“眼睛插入”。

These tiny spheres scatter light, giving opal its characteristic rainbow sheen.

这些小球状体分散了光，赋予了欧泊最具特色五彩光泽。

Currently, scientists treat the object with adhesive paper and light making a fingerprint visible.

目前，科学家用胶粘纸和光处理这些物品，使指纹清晰可见。

So if lights bending, that means that space and time have to be warped.

所以果光弯曲，那就意味着空间和时间必须是弯曲。

But that means that retinas in your eyes are not catching the light, either.

但这代表你视网膜也无法捕捉到任光。

You know, film speed, the light, you know.

我在一起探讨拍摄速度、光这些东西。

Just finding soft light, just kind of gently fills the room.

只要一点柔和光，轻柔地充满整个房间。