20. X-ray Emission and Absorption (Intro to Solid-State Chemistry)
How's everyone doing? [APPLAUSE] Parents only, how are you doing? [APPLAUSE] How is it that the parents were louder than the kids? Kids, how are you guys doing? [APPLAUSE] All right. Welcome, parents. Welcome, parents. I'm really excited to have you here in class. This is 3091, Introduction to Solid State Chemistry. And today we're going to have a little bit of fun. As you can see, we got some activities. Now, the way I like to frame this-- are there any other seats? No, not so much. But make yourself comfortable. The way I like to frame this is you've got a lot of activities going on already. This is the parent weekend. So if we look at-- why is that happening? If we look at the-- oh, that's not good. OK, there we go. If we look at the MIT family weekend, there is activities. And so what I thought is that what we could do in this class-- we've got to learn a little bit. We're going to learn about x-rays today. But what I thought we could do is...