If this distance is large in comparison to the wavelength, this dam simply casts a shadow.
如果这个距离比波长大，那么这个水坝就会投下阴影。
The precise thickness at which the fibre traps the light depends on the wavelength of that light.
纤维捕捉光束的确切厚度取决于那条光束的波长。
If the distance between the wall and the dam was large in comparison to the wavelength, then what happens?
如果墙和坝之间的距离比波长大，那么会导致什么？
De Broglie, 1924, in his PhD thesis says, if an electron has wave-like properties, this would be its wavelength.
1924年德布罗意在他的博士毕业论文中说道，如果一个电子具有类似波的性质，这就是它的波长。
All substances, all forms of matter, can be distinguished according to what wavelength of light they absorb and which ones they reflect.
所有形式的物质，都可以根据它们吸收的光的波长以及反射的光的波长来区分。
Just remember that violet light is the end that actually has the shortest wavelength, which means that it also has, of course, the highest frequency.
只要记住，紫色光在末端，实际上，它有最短的波长，意味着它当然也有最高的频率。
The assumption of constant relative humidity is important, because water vapor in the atmosphere is another efficient absorber of radiation at infrared wavelength.
相对湿度恒定的假设是重要的，因为大气中的水蒸气是红外波长辐射的另一种有效吸收剂。
I am sure you all know from physics class about how light moves in microscopic ways and that we can only see light when the wavelength of that light is in a specific range.
我相信，你们在物理课上都学过光是如何以微观的方式运动的，以及只有在光的波长在特定的范围内时我们才能看到光这一事实。
This fascinating experiment showed that plants not only detect and react to specific wavelengths of light, plants can also detect and react to changes in the ratio of one wavelength to another.
这个有趣的实验表明，植物不仅能探测和对特定波长的光产生反应，还能探测不同波长比率的变化并对其做出反应。
These effects, Catchpole says, "are usually very sensitive to wavelength.
卡崔布尔说：“这些光谱效应经常随波长而变。”
This wavelength corresponds to one of the best Windows in the atmosphere.
该波长正处于大气最佳窗口之一。
This is because the wavelength of visible light is longer than 200 nanometres.
因为可见光的波长大于200纳米。
We have a UV lamp right here, which is centered at a wavelength of 254 nanometers.
我们有一个紫外灯在这里，波长集中在254纳米处。
The wavelength, and hence the colour, of this light depends on the size of the dot.
光线的波长——即是对应着其颜色——取决于该微粒的尺寸。
Neutralhydrogen emits radiation on a characteristic 21cm wavelength, while ionisedhydrogen does not.
中性氢辐射出离子化氢所没有的特有的21厘米波长。
The power of a light microscope is limited by the wavelength of visible light, which is about 500 nm.
光学显微镜的放大倍数受限于可见光的波长，大约500纳米。
Neutral hydrogen emits radiation on a characteristic 21cm wavelength, while ionised hydrogen does not.
中性氢辐射出离子化氢所没有的特有的21厘米波长。
Only then was it recast in less fleeting terms: as a multiple of the wavelength of a particular type of light.
就在那时，人们用更加稳定的表述来定义这个概念，比如使用某一特定光的波长倍数。
US researchers have made smart fabric that can detect the wavelength and direction of light falling on it.
美国研究人员已经造出一种能够探测到照在表面光线波长和方向的智能织物。
For good reception, the length of an antenna needs to correspond with the wavelength of the radiation it is receiving.
为了很好地接受信号，天线的长度需要对应它接受的信号的波长。
So there was a good question in Wednesday's class about the DE Broglie wavelength and if it can actually go to infinity.
在周三的课上有个关于德布罗意波波长的问题，非常好，就是它能不能到无穷大。
This does not disturb the conformation of the protein molecules; but those in state "zero" absorb light at this wavelength.
这不会干扰蛋白质分子的构造，但那些“0”状态的蛋白质分子将吸收这个波长的光。
We were so much on the same wavelength that she often knew what I was thinking, and vice versa, before we ever said a word.
我和她想法一致，她常常知道我在想着什么，我对她也是一样，彼此之间无须说一个字。
To illustrate: A meter-wide visible light telescope is a couple of million times wider than the wavelength of light it gathers.
举个例子：米宽光学望远镜要接收可见光波，其宽度就要大于所接受光波波长的数百万倍。
If for some reason the company's servers aren't exchanging much data, the bandwidth of the dedicated wavelength is being wasted.
若由于某些原因，服务器交换的数据不那么多，专用波长的带宽就被浪费了。
In the case of Dr Sweeney's fibre laser, the beam will have a wavelength of 1.5 microns, making it part of the infra-red spectrum.
以斯威尼(Sweeney)博士研发的光纤激光器为例，它产生的激光波束波长为1.5微米，这使其成为红外线光谱的一部分。
Resolution is still limited by the wavelength of the electron beam, but this wavelength is much smaller than that of visible light.
分辨率仍受限于电子束的波长，但此波长远小于可见光的波长。
Depending on wave height and speed, as well as wavelength and water density, each buoy can produce up to 40 kilowatts of electricity.
每一个浮标最高可以产生高达40千瓦的电力，发电的多少依赖于海浪的高度以及速度，同样也依赖于海浪的波长以及海水的密度。
In a photonic crystal the elements are about the same size as the wavelength of light-a few hundred nanometres (billionths of a metre).
在光子晶体中，其成分与光的波长是同样的大小——几百纳米(一米的十亿分之一)。
In a photonic crystal the elements are about the same size as the wavelength of light-a few hundred nanometres (billionths of a metre).
在光子晶体中，其成分与光的波长是同样的大小——几百纳米(一米的十亿分之一)。
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