第二大射电望远镜在俄罗斯。
射电望远镜拍摄的天空图片不是可见光，而是无线电波。
Radio telescopes create pictures of the sky, not in visible light, but in radio waves.
世界上最大的射电望远镜于2017年9月25日在中国完工。
The world's largest radio telescope was finished on Sept. 25, 2017 in China.
问题是，有了射电天文学，你就不能仅在后院安装一个望远镜来观察星星。
The thing is, with the radio astronomy, you can't just set up a telescope in your backyard and observe stars.
许多天文学家使用射电望远镜进行太空实验，这些望远镜在白天也同样有效。
Many astronomers use radio telescopes for space experiments, which work just as well during the daylight hours.
这是非常有用的，因为有些物体是看不见的，如果没有射电望远镜我们甚至不知道这些物体。
This is extremely useful, because there are objects that can't be seen, objects that we wouldn't even know without radio telescopes.
射电望远镜有时会被组合在一起，这与使用一个大望远镜来增加无线电波的收集能力是一样的。
Radio telescopes are sometimes grouped together, is the same effect as having one big telescope to increase radio wave gathering power.
我们需要使用射电望远镜，专门设计来接收这些波，然后，我们可以使用电脑根据我们接收到的信息来创建图片。
We need to use radio telescopes, specially designed to receive these waves and then, we can use computers to create pictures based on the information we receive.
从可见光扩展到无线电波，再到X 射线和伽马射线，天文学总是会发现不寻常的物体，如射电星系、类星体和脉冲星。
The extension of astronomy from visible light to radio waves to x-rays and gamma rays never failed to lead to the discovery of unusual objects such as radio galaxies, quasars, and pulsars.
到目前为止，世界各地的不同组织已经进行了多次搜索，包括澳大利亚人使用射电望远镜在新南威尔士州帕克斯进行的搜索。
So far there have been a number of searches by various groups around the world, including Australian searches using the radio telescope at Parkes, New South Wales.
"其中一部分是有针对性的搜索，使用了世界上最大的射电望远镜，分别是：在波多黎各阿雷西博的由美国操作的望远镜，在法国南茜使用的望远镜。
One part is a targeted search using the world's largest radio telescopes, the American-operated telescope in Arecibo, Puerto Rico and the French telescope in Nancy in France.
卡拉汉假定化学元素放射电磁信号。
Callahan posits that chemical elements radiate electromagnetic signals.
在中国，我们正在使用500米口径球面射电望远镜寻找太空中的星星。
其时是1933年，射电天文学由此诞生。
这一系统旨在感应雷击产生的低频射电脉冲。
It is designed to detect the low-frequency radio pulses emitted by lightning strikes.
让这个来表示入射电子的，总能量。
Let this represent the total energy of the incident electron.
但是，射电天文物理学仍然认为它们相对粗糙。
But the physics of radio astronomy means they are, nevertheless, relatively crude.
在欧洲，使用光纤是射电望远镜另一项大型升级的重点。
Fiber optics are central to another big upgrade of radio telescopes in Europe.
都用来发射它，剩下的这些就是，出射电子的动能。
And what we have left over is this amount of energy here, which is going to be the kinetic energy of the ejected electron.
Brenner博士所使用的方法是发射电子显微镜。
Dr Brenner's method used what is known as a transmission electron microscope.
绑匪通过发射电波信号同科学家联络。科学家保持电波发射联络。
The kidnappers contacted the scientist by emitting the radio signals the scientist kept in touch with the emission.
这个科学研究主要是研究水中的DNA发射电磁波这一现象。
The main topic will be this phenomenon of electromagnetic waves produced by DNA in water.
数十年来射电天文学家们一直吹嘘他们拥有这个星球上最大的天文望远镜。
And for decades radio astronomers have been able to boast that they had the largest telescopes on the planet.
与之相似的是，某些传感器已在更高效地利用另一种稀有来源——射电谱。
Similarly, some sensors already make more efficient use of another scarce resource: radio spectrum.
当这些科学家们用光照射电极时，液体溶液中的蝶呤素开始发电。
When the scientists shed light on the electrode, the pigment in the solution generated electricity.
这样薄片就可以丢弃，所以速度比使用发射电子显微镜快得多。
The slice itself can be discarded, so the process is much faster than using a transmission microscope.
在工作日里，你在办公桌后拼杀，在寝室的庇护下投射电子邮箭。
During the week, you fight your battles behind a desk, slinging e-mail arrows from the safety of your cubicle.
射电望远镜阵列混合了它所收集的无线电波，极大的提高了宇宙呈像的分辨率。
Arrays of radio telescopes combine the radio waves they collect to vastly enhance the resolution of their cosmic images.
射电望远镜阵列混合了它所收集的无线电波，极大的提高了宇宙呈像的分辨率。
Arrays of radio telescopes combine the radio waves they collect to vastly enhance the resolution of their cosmic images.
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