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Listen to part of a lecture in a material science class.
请听材料科学课上的部分内容。
OK.Last time we finished going over some of the fundamental concepts of nanotechnology,
上次我们讲完了关于纳米技术的一些基本概念，
the multi-disciplinary science of manipulating or controlling extremely small units of matter on the scale of molecules or even atoms.
这是在分子或者甚至原子规模上操纵极小单位的物质的多学科科学。
So, I want to talk about how nanotechnology is being used today.
所以我想讲一讲如今我们是如何应用纳米技术的。
And just to give you an idea, we’ll look at one particular application.
为了让你们有个大致了解，我们来看一个具体的应用案例。
A team of material scientists in Massachusetts has been working on a new ultra-thin coating,
一组Massachusetts的材料科学家一直在研究一种新的超薄涂层，
a nano coating that might be applied to objects like bathroom mirrors, car windows, and eye glasses to prevent fogging.
一种也许能涂在像浴室镜子、车窗和眼镜上防止起雾的纳米涂层。
And the coating has the potential to be a permanent solution, unlike the kinds of anti-fogging spray-on liquids that are on the market today.
这种涂层有永久性解决问题的潜力，不像现在市场上的那种防起雾的喷雾型液体。
Now, fogging often occurs when a cold surface comes into contact with warm moist air, such as when a glass shower door or mirror fogs up during a warm shower.
当一个冰冷的表面接触到了温暖的湿气时就会起雾，比如一个淋浴室的玻璃门或镜子会在洗热水澡时起雾。
Now, what’s actually happening is, what the fog is, is thousands of tiny spherical water droplets condensing on the surface of the glass.
真正发生的是，这个雾是好几千个微小的球形水滴凝结在玻璃表面。
Light hits the water droplets and is scattered in random directions, causing the fogging effect.
光线照到这些水滴上并且发散到了任意方向，由此导致了起雾效应。
