The light emitted by your devices releases wakeful chemicals in your brain.

设备的屏幕光会在大脑中释放出让人清醒的化学物质。

But the artificial blue light emitted by computer screens can suppress its release.

但是电脑屏幕发出的人造蓝光会抑制褪黑素的释放。

The color, the wavelength, of light emitted changes as the bar heats up.

光的颜色、波长会随着棒加热而改变。

Nearly everything we understand about the Universe comes from light emitted or reflected by objects.

我们对宇宙的理解几乎都来自于物体发射或反射的光。

Automated towers use light emitting dyads or LED lights to help grow fresh animal feed.

自动饲助发光二极管或LED灯促使作为动物饲料的植物生长。

Maybe you're thinking, " Okay nerd, why is OLED or organic light emitting diode such a big deal? "

也许你在，" 好吧，书呆子，为什么 OLED 这么重要？"

Because the light emitted at this time is what we see as the cosmic microwave background today!

因为此时发出的光就是我们今天所的宇宙微波辅助背景！

This is light that organisms can emit for themselves.

这是生物体可以为自己发出的光。

The blue light emitted by electronic devices makes us feel less sleepy.

电子设备发出的蓝光让我们感觉不那么困倦。

And that movement changes the color of the light emitted by the gas.

这种运动改变了气体发出的光的颜色。

They then compare this spectrum with a theory, based on calculations from first principles, of how magnetic fields effect light emitted by hydrogen.

然后，他们把测得的光谱与理论计算得的结果进行了比较，这种理论是基于氢怎样产生磁场效应区域的第一原则得的。

Hydrogen atoms, for example, absorb light emitted by other masses of heated hydrogen.

例如，氢原子吸收 其他质量的加热氢发出的光。

This is a device that can precisely measure the wavelength of light, and can for example distinguish light emitted by a hydrogen atom from light emitted by helium.

这是一种可以精确测量光波长的设备，例如，它可以区分出氢原子发出的光和氦发出的光。

Many telescopes are designed to primarily capture visible light, which represents only a sliver of the spectrum of light emitted by stars and other celestial objects.

许多望远镜的设计主要是为了捕捉可见光，而可见光只是恒星和其他天体所发出光谱的一小部分。

Yes, that's right. The blue light emitted by screens can interfere with your body's production of the sleep hormone melatonin.

是的，这是正确的。屏幕发出的蓝光会干扰你的身体产生睡眠荷尔蒙褪黑素的能力。

Bohr's atomic model resolved several unanswered questions, including the stability of atoms and the reason behind spectral lines observed in the light emitted by heated elements.

玻尔的原子模型解决了几个悬而未决的问题，包括原子的稳定性以及在加热元素发出的光中观察的光谱线背后的原因。

Although this is slower than the speed of the light and materials emitted by solar flares, coronal mass ejections can have much more dramatic effects on Earth.

虽然这比太阳耀斑发射的光和物质的速度要慢，但日冕物质抛射对地球的影响要大得多。

By that I mean we can't continue to use inefficient street lighting equipment which enables a lot of the light emitted to escape upwards into the sky.

我的意思是，我们不能继续使用低效的街灯设备，让很多光线逸入天空。

Nakamura for developing the blue light emitting diode, or LED. This ridiculously useful invention is the key to making possible the white LED bulb.

Nakamura 开发了蓝色发光二极管或 LED。这个非常有用的发明是使白色 LED 灯泡成为可能的关键。

The thing about this, it's not anymore about perceiving the light emitted from a screen but now traveling inside the light, traveling inside the scene.

关于这一点，它不再是关于感知从屏幕发出的光， 而是现在在光中传播， 在场景中传播。