Gases, mixtures, surfaces, solids, phase changes, chemical reactions, electrochemical cells, sedimentation, and osmosis, to quote William H. Cropper.

引用 William H. Cropper 的话来说，包括气体、混合物、表面、固体、相变、化反应、电化电池、沉积和渗透。

As the phases change, inexorably, day after day, the angle of sunlight hitting the surface changes, bringing new things into our view.

着月相的变化，日复一日，阳光照射地面的角度也变化，把新的事物带入我们的视野。

We call that a phase change, or a change of state.

我们称之为相变，或者状态的变化。

Like the snowball melting and vaporizing, each of these moments in the history of the Universe was like a phase change.

就像雪球的融化和蒸发一样，宇宙历史中的每一个瞬间都像一个相变。

You will undoubtedly have noticed how carefully Jordan observes the changing phases of the Magdalena River and how sympathetically he listens to the people whom he meets.

毫无疑问，您会注意到乔丹是多么仔细地观察马格达莱纳河的变化阶段，以及他是多么富有同情心地倾听他遇到的人。

And so what would be a symbolic representation of this phase change in water?

那么，水的这种相变可以用什么符号来表示呢？

We are gonna go through a phase change.

我们将经历一次转变。

During 1609-1610, he discovered that the planet Jupiter had four moons, Venus underwent phase changes, the moon was mountainous, and the sun was spinning round once in about a month.

1609至1610年间， 他发现木星有四颗卫星，金星呈现相位变化， 月球地貌多山，而太阳大约每月自转一周。

For example, this video on percolation showed a completely fascinating toy model for studying phase changes, a model where it's easier to make exact proofs.

例如， 这段关于渗流的视频展示了一个完全令人着迷的玩具模型， 用于研究相变，这个模型更容易进行精确证明。

Instead, the amount of heat that gets transferred during a phase change is equal to the mass times what’s known as the latent heat.

相反，相变过程中传递的热量等于质量乘以所谓的潜热。

So are we at another possible phase change here, where we kind of sleepwalk into a future that none of us actually wants?

那么， 我们是否处于另一个可能的阶段变化中，我们梦游到一个我们实际上都不想要的未来？

The value also depends on the phase change.

它的价值取决于材料。 该值也相位变化而变化。

Today, you learned about thermal energy, as well as heat, and how much of it you need for both temperature changes and phase changes.

今天，您了解了热能和热能，以及温度变化和相变需要多少热能。

We also talked about phase changes, including the critical point, the triple point, and how that all applies on Mars.

我们还谈到了形状变化，临界点 三相点，以及这如何适用于火星。

So that’s how heat affects phase changes. But what about how heat spreads?

这就是热量如何影响相变。但是热量是如何传播的呢？

So that's how heat affects phase changes.

所以这就是热的影响 相变。

Instead, the amount of heat that gets transferred during a phase change is equal to the mass times what's known as the latent heat.

相反，它是相变期间传递的热量 质量等于所谓的潜热。