It was being warmed by radioactive elements in the granite that formed in the solidified magma chamber below.

在下面凝固的岩浆腔中形成的花岗岩中的放射性元素正在给它加热。

Everywhere are traces of the sudden appearance of rare radioactive elements like plutonium, a legacy of nuclear weapons.

到处都有迹可循的是诸如核武器或燃料等设备中才涉及到的钚这类放射性元素的突然微量出现。

As a radioactive element decays, the individuals atoms split into multiple, but when that happens the reaction also releases energy.

当放射性元素衰变时， 单个原子分裂成多个原子，但当这种情况发生时， 反应过程中也会释放能量。

Since Mars doesn't have easily accessible radioactive elements, the nuclear fuel needs to come from Earth along with the reactor.

由于火星没有易获得的放射性元素，核燃料和反应堆均需要来自地球。

Together, the two of them discovered two new radioactive elements: polonium, named after Marie's home country of Poland, and radium.

钋和镭，钋是以玛丽的祖国波兰命名。

Like her mother, Irene was awarded a Nobel Prize, along with her husband Frederic in 1935, for producing new radioactive elements.

和她的母亲一样，艾琳于1935年，与他的丈夫弗里德里克，因创造了新的放射性元素，共同获得了诺贝尔奖。

Neutrinos are subatomic particles produced when radioactive elements decay.

中微子是放射性元素衰变时产生的亚原子粒子。

So, were there other radioactive elements that might be responsible?

那么，是否还有其他放射性元素可能对此负责？

Let’s start off with another scientist who worked with radioactive elements -- Lise Meitner.

让我们从另一位研究放射性元素的科学家开始——Lise Meitner。

Let's take a look at what may be the most famous radioactive element, uranium.

让我们来看看最著名的放射性元素铀是什么。

The energy of the gamma-rays, the highest energy form of light, corresponded to thorium, a radioactive element.

伽马射线的能量是光的最高能量形式，相当于放射性元素钍。

Well it's fairly simple, given enough time all radioactive elements would decay in to non radioactive forms.

好吧，这很简单，只要有足够的时间， 所有放射性元素都会衰变成非放射性形式。

The ages of these flowstones can be determined by the ratio within them of the radioactive elements uranium and thorium.

这些流石的年龄可以通过其中放射性元素铀和钍的比例来确定。

It wasn't until the mid-20th century we realized that radium's harmful effects as a radioactive element outweighed its visual benefits.

直到 20 世纪中叶，我们才意识到镭作为一种放射性元素的有害影响超过了它在视觉上的好处。

Perhaps the most transformative element of Curie's work was the discovery of two previously unknown radioactive elements—Polonium, named after her beloved Poland, and Radium.

也许居里夫人的工作中最具变革性的元素是发现了两种以前未知的放射性元素——钋（以她深爱的波兰命名）和镭。

Titanic amounts of heat left over from its birth and the radioactive decay of trillions of tons of radioactive elements find no escape but up.

海量的地球诞生余热以及数万亿吨的放射性元素除了向上以外没有其他的逃脱方向。

Dr Alexander Farnsworth, at the University of Bristol, said plutonium is a radioactive element and decays over time, so might not persist over geological timescales of millions.

布里斯托尔大学的亚历山大·法恩斯沃思博士说，钚是一种放射性元素，会随着时间的推移而衰变，因此可能不会在数百万年的地质时间尺度上持续存在。

First, people guessed that the fogging was caused by the radioactive element radium, since it could trigger and expose X-Ray films if it managed to get into the package.

首先，人们猜测这是由放射性元素镭引起的，因为如果它进入包装的话，可能会触发曝光 X 光胶片。

When Tepco called for public comments for the study, some experts pointed out troubling information gaps, such as the lack of a full inventory of what radioactive elements remained in the tanks.

当Tepco征求对这项研究的公众意见时，一些专家指出了令人担忧的信息缺口，比如没有完整清单列出罐中剩余的放射性元素。

Now you might be asking, if radioactive elements are always decaying in to more and more stable isotopes that are eventually no longer radioactive, why are they still around at all?

现在您可能会问， 如果放射性元素总是衰变成越来越稳定的同位素，而这些同位素最终不再具有放射性， 那么为什么它们仍然存在呢？