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。

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

自动饲养塔借助发光二极管或LED灯促使作为动物饲料的植物。

The lack of natural light in space means that plants are grown using LED lights-LED is an abbreviation of 'light emitting diode'-an electronic device that lights up when electricity is passed through it.

太空中缺乏自然光意味着利用 LED 灯种植植物——LED 是“发光二极管”的缩写——当有电通过时会发光的电子元件。

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。

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

设备的屏幕光会在脑中释放出让人清醒的化学物质。

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。

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

光的颜色、波会随着棒加热而改变。

They were first predicted in 1780s by natural philosopher Jon Michell who suggested that the gravity of a sufficiently dense star could be so great that even light emitted by it would be unable to escape its pull.

自然哲学家乔恩·米歇尔在18世纪80年代测了这种现象。他认为，当恒星的密度足够时，其产的引力也会很，甚至连它自己发出的光也无法逃脱。

Well, check out these waves in Orange County, California, this naturally occurring phenomenon occurs when water is turned up, like these waves causing a chemical reaction in light emitting organisms, like algae blooms.

现在，看看加利福尼亚州奥兰治县的这些海浪，这种自然现象发在水被搅动时，比如这些浪涌，引发了发光物（如藻类绽放）中的化学反应。

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得多。

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到的结果进行了比较，这种理论是基于氢怎样产磁场效应区域的第一原则得到的。

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

也许你在想，" 好吧，书呆子，为什么 OLED 这么重要？"

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的设备，例如，它可以区分出氢原子发出的光和氦发出的光。

A substantial fraction of the light emitted from the nebula is powered by the pulsar itself: its fierce output energizes the nebula, causing it to glow brightly even after a millennium.

它强烈的能量输出使星云充满活力，使它即使在一千年后仍发出明亮的光芒。

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。

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看到的宇宙微波辅助背景！

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.

而这种运动改变了气体发出的光的颜色。

This effect – which occurs with light emitted by an object moving away from Earth – is called redshift, because the longer the wavelengths get, the closer they are to the red part of the visible spectrum.

这种效应——发在从地球远离的物体发出的光中——被称为红移，因为波越，就越接近可见光谱中的红色部分。

The compounds used to make up the emissive layer determines the color of the light emitted, and the intensity of this light is dependent on how many electrons pass through.

用于构成发射层的化合物决定了发出光线的颜色，而光线的强度则取决于有多少电子通过。