Question: how are the tvs made????

Michael Cook answered on 27 Jun 2012:

Lots of different things go into televisions! Plus, nowadays there are lots of different kinds of TV. There’s a lot of plastic, to make the frames and buttons, and a lot of circuitboards and electronics to receive the TV signals and turn them into pictures. The really interesting bit is the screen, though.

LCD televisions are quite common today. The way they work is this: the screen is made of thousands of tiny little boxes, each one representing one pixel (one dot of colour) on the screen. Inside each one of these boxes are two bits of metal that can be charged with electricity, and in between the metal is a thin bit of liquid crystal.

When you send some electricity through the bits of metal, they change the way light passes through the crystal, either letting less light through (and making it darker) or letting more light through (and making it lighter). Your TV changes the electricity going through each and every pixel on the screen dozens of times in a second, and shines a light from behind the screen so you can see what’s going on. The TV signal coming from your Sky box tells the TV which pixels to change so you get to watch your favourite show. It’s a really amazing piece of technology!