I have a question about TV resolution (CRT). Is the resolution a function of the phosphor screen or is it a function of the electron gun that scans the pictures? That is, are the phosphors laid down in rows and columns which determine the horizontal and vertical resolution, or are the phosphors densely laid down and it is the number of rows and columns that the gun scans that's the limiting factor? What are the vertical lines I can see on my TV screen when it is turned off? Are they the rows of phosphors? I'm just curious. Thanks.