Beyond the visible spectrum, our world is illuminated by invisible light.

除了可见光之外，各种不可见光笼罩着这个世界。

Visible light just passes over them.

可见光只会穿过它们。

Light, both visible and invisible, is all around us.

可见光和不可见光都在我们身边。

Thick dust is also very good at absorbing visible light.

厚厚很善于吸收可见光。

Its neutrinos reached Earth about three hours ahead of the visible light.

这些中微子比可见光提前三小时抵达地球。

And these colors aren't limited to visible light.

而且这些颜色并不局限于可见光。

There are limitations to using light, of course.

当然，利用可见光通在局限性。

The wavelengths we see through our eyes, we call visible light.

我们通过眼睛看到波长，我们称之为可见光。

Unlike radio, light waves will not penetrate walls.

可见光不同于无线电波，无法穿透墙壁。

Together with visible light, all these types of radiation are called the electromagnetic spectrum.

同可见光一起，所有类型辐射都叫做电磁频谱。

Just like visible light, x-rays are less likely to penetrate denser materials.

类似于可见光，X线难以穿过密度高物体。

This is what we call “visible light, ” also known as the visible spectrum.

这就是我们所说“可见光”，又叫可见光谱。

That energy is emitted as photons of visible light.

能量以可见光光子形式发射。

They let visible wavelengths pass through, but the lens's rounded shape bends the light.

它们让可见光经过，但其圆弧形状会让光弯曲。

Infrared has a longer wavelength than visible light.

红外线波长比可见光更长。

At the lower end of the spectrum, there's radio, infrared, and visible light.

在光谱低频端是无线电，红外线，和可见光。

Together, all the colors make up the spectrum of visible light—the light we can see.

所有颜色一起构成了可见光光谱——我们所能看到光。

On the left-hand side shows you what we see with visible light with the Hubble Space Telescope.

左边图像是我们用哈勃望远镜看到可见光。

In other words, invisible rays had passed through the cardboard.

换句话说， 就是一道不可见光穿透纸板投射到外面来了。

Visible wavelengths of light are just a tiny fraction of all the light in the universe.

可见光波长在所有光波中只占了很小一部分。