 So before we get started with the actual lecture material, I want to go over just a little bit of an overview here. Our general topic for today is the concept of emotional EMF. And we're going to develop this concept and the equation for emotional EMF from two different perspectives. Now the first one is by looking at magnetic force. And in order to do that, we're going to remind ourselves with a quick review of some things we covered back in chapter 29. And then look at the application for EMF to define a new equation using that magnetic force. Our second perspective actually looks at Faraday's law. And for this video clip, it's actually created by another professor. But it's a good video, so pay attention to it. After we've developed this equation from both perspectives, we'll take a quick look at the units for the equation. You'll have a chance to ask a few questions and then work on your practice problem. Remember, as you're going through, you should be taking notes. Yes, I will post these videos for you to look at later. But you'll want to make sure that you take some notes so that you've got your equation and the meaning of all those terms written down before you start trying to work on your practice problem. Pay attention. Good luck.