> Unlike LCDs, CRTs have visible scanlines (lines of light traced by the three electron beams, horizontal on wide monitors and vertical on rotated/tall arcade monitors).
Or in a triangle, on old delta-gun CRTs.
> On a properly calibrated CRT, the three colors of scanline are vertically aligned (convergence errors cause the scanlines and/or horizontal changes of brightness to be misaligned between the three colors).
Inline gun CRTs largely eliminated the need for convergence. I do not miss converging delta gun CRTs at all. Yes, I am quite old.
Or in a triangle, on old delta-gun CRTs.
> On a properly calibrated CRT, the three colors of scanline are vertically aligned (convergence errors cause the scanlines and/or horizontal changes of brightness to be misaligned between the three colors).
Inline gun CRTs largely eliminated the need for convergence. I do not miss converging delta gun CRTs at all. Yes, I am quite old.