crt help

Can anyone help me I need a little help understanding how Interlace works?

 

Much easier to post this link, and I believe that it will help in your quest for knowledge. http://en.wikipedia.org/wiki/Interlaced_video.

 

OK thank you I did go to that same Link I just need a little help understanding some things.

I know NTSC TV CRT screens work by displaying 30 Frames Per Sec.

And One Frame is made up of 2. Fields.

First all the Od Lines are drawn top to bottum left to right and this is called the Top Field.

And this is an image all by it's self.

And as this starts to Fade away then the Even Fields are drawn Top to bottum left to right and this is called the Bottum Field.

And even though the Top Field is starting to Fade when the Bottum Field is being drawn it is these to Field togather that make up one Frame RIGHT?

 

That's the way I understand it, although I never looked into it too deeply.
Here's yet another link which probably tells you things you already know, but it's a good read anyways. http://www.hdtvprimer.com/ISSUES/what_is_ATSC.html