Glass is an enormously important example of a three dimensional silica based amorphous solid.

玻璃是一个及其重要的，三维结构二氧化硅的非晶体模型。

Because it's an amorphous solid with bonds of varying strength, glass doesn't have an exact melting point.

因为玻璃是一种由强度不定的化学键链接成的非晶固体，它没有确定的熔点。

Amorphous solids do however have a couple of macroscopic properties in common.

然而，无定形固体确实具有一些共同的宏观特性。

Amorphous solids also respond to stress very differently than crystalline solids.

无定形固体对应力的反应也与结晶固体非常不同。

We have a name for this, amorphous solids are isotropic.

我们为此起了个名字，非晶态固体是各向同性的。

And crystals are only one subset of a universe of materials that includes everything from amorphous solids such as glass through to gases, gels and liquids.

晶体只是物质宇宙的一个子集，包括从无定形固体(如玻璃)到气体、凝胶和液体的所有物质。

The regimented structure of a crystal and the laid-back chaos of an amorphous solid both affect the way they interact with light, magnets, and other materials.

严格排布的晶体结构和松散无序的非晶形固体共同影响了它们同光线、磁场和其他材料的相互作用。

That's what causes amorphous solids to melt gradually, like this glass tube.

这就是导致无定形固体逐渐熔化的原因，就像这个玻璃管一样。

If you've paid attention, you've learned the difference between amorphous and crystalline solids.

如果您留心观察，就会了解无定形固体和结晶固体之间的区别。

First, it is important to understand that because the particles in an amorphous solid are arranged randomly, the strength of the bonds holding them together are also random.

首先，重要的是要理解，因为无定形固体中的粒子是随机排列的，所以将它们结合在一起的键的强度也是随机的。

And even hard amorphous solids that do break under pressure rarely do it along straight lines, that's why broken glass ends up in crazy random shapes.

即使是在压力下破裂的坚硬无定形固体也很少会沿着直线破裂，这就是为什么破碎的玻璃最终会变成疯狂的随机形状。

(CrashCourse Intro plays) The category of amorphous solids includes things that you might expect, like foams and gels and colloids, like mayonnaise, rubber, waxes, and some biological tissues such as fat.

（速成课程简介播放）无定形固体类别包括您可能想到的东西，如泡沫、凝胶和胶体，如蛋黄酱、橡胶、蜡和一些生物组织，如脂肪。

Now, when water gets sucked out of a tardigrade’s cells, these TDPs start getting glassy – which, in chemistry terms, means the proteins link together to form a jumbled, amorphous solid.

现在，当水从缓步动物的细胞中吸出时，这些 TDP 开始变得玻璃状——从化学术语来说， 这意味着蛋白质连接在一起形成混乱的无定形固体。

So amorphous solids don't have the sharp discrete melting points of things like ice, which melts exactly at 0, instead, they melt over a range of temperatures, as the heat energy increases.

因此，无定形固体不像冰那样具有尖锐的离散熔点，冰的熔点恰好为 0， 相反，随着热能的增加， 它们会在一定温度范围内熔化。

But with many amorphous solids, it's hard to find a plane like that, no matter how you attack it, you'll usually run into molecules that are sitting right in the middle of that plane, resisting the break.

但是对于许多无定形固体， 很难找到这样的平面，无论你如何攻击它，你通常都会遇到分子， 这些分子正位于该平面的中间， 抵抗断裂。