"Of course,we don't know what doses they've received, but the only persons at risk of acute radiation effects are the workers."

VOA: special.2011.03.16

And that means radiation of energy, and that energy has to come from inside the atom itself.

意味着有能量的辐射，这些能量来自于原子本身。

麻省理工公开课 - 固态化学导论课程节选

And, when zinc sulfide is hit by particles or by anything, by radiation or by particles of greater than a certain critical energy, there is a glow.

当粒子或其他东西,通过辐射或粒子的方式，并且能量高于临界值,撞击到硫化锌的表面上的时候，就会发光。

麻省理工公开课 - 固态化学导论课程节选

Before the laser, scientists developed a similar device: a maser which stands for Microwave Amplification by Stimulated Emission of Radiation.

VOA: special.2010.09.01

For example, if we talk about photons, of course, we also just mean light, sometimes we refer to this as electromagnetic radiation, and there's several ways that you might be asked this in a problem or that you might be asked to answer.

举例来说，如果我们讨论光子，当然我们也叫做光，有时候我们看作是电磁辐射，而且这里有几种方式,你可能会在题目中被问到,或者被提问回答。

麻省理工公开课 - 化学原理课程节选

Professor Links says workers within the nuclear plant are the only people at risk of extremely high doses of radiation.

VOA: special.2011.03.16

He used various forms of high-energy radiation in order to make the droplets bear a charge.

他使用很多形式的高能辐射,为了就是使这些液滴带电。

麻省理工公开课 - 固态化学导论课程节选

The radiation is from the Fukushima nuclear power station that was damaged by the March eleventh earthquake and tsunami.

VOA: special.2011.03.29

So quantization of radiation was already established as of about 1900.

所以辐射的量子化概念,在1900年左右就建立了。

麻省理工公开课 - 固态化学导论课程节选

So for the ten patients in the study, doctors used a low amount of radiation to destroy only some of their marrow.

VOA: special.2009.12.16

On the other hand, when it came to penetrating solids, penetrating solids, the alpha radiation was poor at penetrating solids, whereas the beta radiation was very good at penetrating solids.

另一方面，当研究穿过固体的时候，嗯，穿过固体，会发现阿尔法射线很难穿过固体，然而贝塔射线,很容易穿过固体。

麻省理工公开课 - 固态化学导论课程节选

They found that in many cases, the risk of developing cancer from the radiation outweighed the risk of a serious brain injury.

VOA: special.2009.10.28

And, it will be accompanied by radiation.

这时会伴随着辐射。

麻省理工公开课 - 固态化学导论课程节选

In the United States, the Armed Forces Radiobiology Research Institute is looking for more-effective treatments for radiation exposure.

VOA: special.2011.03.30

Radiation is the emission of energy.

辐射会发出能量。

麻省理工公开课 - 固态化学导论课程节选

Another was a set of special instruments that helped measure the effects of the sun's radiation on the outside of the aircraft.

VOA: special.2010.07.07

So what we'll do is this problem here, which is let's calculate out what the wavelength of radiation n would be emitted from a hydrogen atom if we start at the n equals 3 level and we go down to the n equals 2 level.

我们来做这个问题,让我们来计算一下,从n等于3到,等于2能级氢原子辐射的波长是多少。

麻省理工公开课 - 化学原理课程节选

But a recent study warned that more children than necessary are being exposed to radiation this way.

VOA: special.2009.10.28

And then he analyzed the components of that radiation and this is what he found.

然后他分析了，这种辐射的组成部分,这就是他的发现。

麻省理工公开课 - 固态化学导论课程节选

People can get cancer from low doses of ionizing radiation, the kind released in a nuclear accident.

VOA: special.2011.03.16

Second, even if it didn't collapse, they said you've got a radiation problem.

第二点，即使不坍塌，他们说会存在辐射问题。

麻省理工公开课 - 固态化学导论课程节选

The patient does not get much radiation from the process, which lasts only a few minutes.

VOA: special.2010.08.31

About 10 to 15 years later, another physicist, Ernest Rutherford, actually put this plum pudding model to test, Ernest Rutherford and he did it through studies that he'd been doing on radiation that was emitting something called alpha particles.

因此我们要，在上面再做改进,大概过了10到15年，另外一个物理学家,用实验来检测这个李子布丁模型,他一直从事alpha粒子辐射研究。

麻省理工公开课 - 化学原理课程节选

They also may use radiation to kill cancer cells and reduce the size of cancerous growths.

VOA: special.2010.07.06

The Homestake Gold Mine was chosen to study dark matter because it is largely protected from the radiation that could interfere with the project.

VOA: special.2009.07.21

They then use radiation to weaken the parasite, which is then harvested for the vaccine.

VOA: special.2010.04.20

Radiation used in CT scans may be harmful to the genetic material within mummified remains.

VOA: special.2010.06.29

However,no radiation is involved with terahertz imaging, also known as full body scan technology.

VOA: special.2010.06.29

The most important was the discovery of a belt of radiation around the Earth.

VOA: special.2009.06.10

Medical physicist Jerrold Bushberg is a radiation expert at the University of California,Davis.

VOA: special.2011.03.29