 So we're now in lab looking at some light sources, and I'm going to show these to you one at a time But you'll be answering some different questions about them So first of all is our regular light bulb now. It's so bright. It kind of overwhelms the camera there But that's our regular light bulb Then later in the lab You're going to be working with some of these other lamps a b c and d Now you don't have to answer any questions off of them right now I just wanted to give you a view with the overhead lights on So that when you see some of the other pictures later, you kind of know what we're dealing with