 Today we're going to be talking about video on your TV and as an earlier video alluded to What makes high definition is just the sheer number of pixels in other words if you guys you're looking at the screen right here There's over 2 million pixels each with its own little bit of picture information So the detail is very high and that's it makes high definition high-def But people say well should I buy an LCD or should buy a plasma well the principle For the video is exactly the same. I'll show you what I mean I have here a pattern generator, which is a tool that we use Determined TV problems and here we have a white screen and we'll go to the green so Each pixel here actually a three subpixel the green a red And blue and by mixing green red and blue We can get any color from black to white and all the colors that are in between and that's how we That's how the picture is generated for example You get a green grass down here in the blue sky You just have all the green pixels turned on and the red and the blue off up here. You could have the blue Turned on although the sky is not this blue with the lighter blues You have a little bit more mixture of red and green in it and on kind of faces The flesh tones are a combination again of the red green and blue And that's how your color is generated via plasma or be it an LCD Something else you want to take into consideration of the viewing angle in other words on an LCD TV If you're looking straight on at the picture, it looks great If you kind of walk off to the side There's the fade that's something that you don't want so again Consider when you're purchasing a TV the viewing angle and also distance a number of people said what size should I buy? Well, there's many different rules the one I use called rule 3 and as example if we look at this This is the 48 inch TV. We got 48 inches, which is 4 feet So we take 4 times 3 that's 12 feet and that's the maximum distance You'd want to be from this TV or you take half it'd be 6 feet That'd be what the closest distance you want to be or 9 feet would be the optimum distance So again, see where your TV is see where you sit measure the distance and go from there Now what determines the picture quality? well, and basically as we said we got 2 million pixels and When standard definition first came up there was used on high definition TV The picture was pretty bad because the TV had to up convert it. In other words, I take 480 And just convert it to 1080 and it left some things a chance whereas true 1080p is your best picture Now what sources are there for our high definition to you? Well, it's a Blu-ray DVD player There's a cable box such as we have right here. There's dish network They have a satellite box similar to this as well as direct TV does or if you happen to be an area where you can receive over the air TV You can get high definition TV from that