一束光通过棱镜就会形成光谱。
A spectrum is formed by a ray of light passing through a prism.
光通过棱镜时产生折射。
光通常沿直线传播。
这种光通过棱镜，而棱镜把它分割成了一道光谱。
This light is passed through a prism, which breaks it up into a spectrum.
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
You all know how when you take a crystal prism and pass a beam of sunlight through it, you get a spectrum, which looks like a continuous band of rainbow colors.
要真正体验这种装饰玻璃的美，你应该在有光通过它的时候看它，特别是在阳光通过的时候，这就是为什么彩色玻璃通常用于窗户上。
To truly experience the beauty of this decorative glass you should see it with light passing through it, especially sunlight, which is why stained glass is usually used for windows.
据记载，佛光通常出现在太阳斜照的时候。
According to record, the Buddhist Light usually appears when the sun is shining slantly.
研究了光通量和昼夜温差对自养培养马铃薯试管苗生长的影响。
The effect of PPF and DIF on plantlet growth of potato in vitro under photoautotrophic condition was investigated.
这些孢囊梗的形成在不同的光通量下起作用，因此在特定的感光体下起作用。
The formation of these sporangiophores work at different light fluences and therefore with specific photoreceptors.
这个波长上的光通常被完全吸收。
Light at that exact wavelength would normally be totally absorbed.
灯光通明的电视塔整晚似灯塔般照耀着。
把窗帘都关上，避免让光通过窗户直射进房间。
Keep direct sunlight from pouring through the Windows by pulling the shades down or closing the drapes.
因此，成百上千的企业、医院和大学正在使用无线光通信。
As a result, hundreds of businesses, hospitals and universities are already using FSO.
[劳拉·范肯等，《夜间灯光通过改变进食时间增加体重》]
[Laura Fonken et al, Light at night increases body mass by shifting the time of food intake]
当然，如果在室内使用无线光通信，就没有必要担心恶劣天气。
There is no need to worry about bad weather when using FSO indoors, of course.
这个研究组已经研制出一种激光通过光纤到达火花塞的点火系统。
The team has already created an ignition system in which a laser travels through fiber-optic cables to optical spark plugs.
正常的彩虹是由于光通过雨水，雾气，有时甚至海浪的折射所形成。
Normal rainbows form when light refracts through raindrops, mist, or sometimes even sea spray.
与符合这些基本标准的人度过一段时光通常会发生很多有趣的事情。
Spending time with people who meet these basic criteria often makes interesting things happen.
幻日是阳光通过云层中微小冰晶的折射而造成的另一种大气光学现象。
A sundog is another atmospheric optical phenomenon caused by the refraction of sunlight by tiny ice crystals in clouds.
Angstrom的两名研究员正在研究采用更实用材料的光通信方案。
Two of the Angstrom researchers are investigating optical-communications schemes that use more practical materials.
无线光通信的支持者喜欢说这一技术拥有光纤连接的速度和无线连接的方便性。
Advocates of FSO like to say it has the speed of a fibre-optic link, and the convenience of a wireless link.
当全世界的冰川已经消退时，我们还在用呆滞的目光通过自己的烧杯进行观察。
From our own beaker, we've watched with glazed eyes as glaciers have retreated worldwide.
在上面的照片中，阳光通过树上焦红色的叶片，在其周围流动着一条乡村的小溪。
In the above photo, the sun shines through the caramel-colored leaves of trees surrounding a flowing country creek.
该装置可以将高速信号处理，集成电路，光通信，超级计算和其它应用的未来具体化。
The device could shape the future of high-speed signal processing, integrated circuits, optical communications, supercomputing and other applications.
在日本，由诸如索尼、东芝和NEC等巨人组成的可见光通讯康采恩，正在追求这一目标。
In Japan the Visible Light Communications Consortium, made up of industrial giants such as Sony, Toshiba and NEC, is pursuing just that goal.
虽然极光通常只出现在高纬度地区，但是在磁暴发生时，极光也能点亮稍低纬度地区的天空。
And while aurorae are normally visible only at high latitudes, they can light up the sky even at lower latitudes during a geomagnetic storm.
极光通常只有在靠近地球的南北极才是可见的，在那里磁力线的通道使向着地球的粒子带电。
Auroras typically are visible only near Earth's Poles, where magnetic field lines channel charged particles toward the planet.
相反，这两类技术最终可能是共同存在：无线连接用于上传，无线光通信用于更高速的下载。
Instead, the two technologies may end up being used together: Wi-Fi as the uplink, and FSO for the much faster downlink.
只要无线光通信是在相对较短的距离上设置的——如几百米——他说，这是一种很可靠的技术。
Provided FSO is set up over relatively short distances-say several hundred metres-it is a reliable technology, he says.
只要无线光通信是在相对较短的距离上设置的——如几百米——他说，这是一种很可靠的技术。
Provided FSO is set up over relatively short distances-say several hundred metres-it is a reliable technology, he says.
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