No, resolution is not a digital concept. Pixels are a digital concept[0], but in an analog signal there is still a limit on how much frequency content you can r

No, resolution is not a digital concept. Pixels are a digital concept[0], but in an analog signal there is still a limit on how much frequency content you can resolve. CRTs additionally impose their own limit on how sharp the picture can get horizontally. Confusingly, these are called "television lines", even though you'd think that refers to the horizontal scanlines that do discretely divide up the picture vertically. Color CRTs further limit the amount of color resolution independent of luminance resolution, and how they do that depends on what specific phosphor pattern they use, how they separate electrons from each color gun, etc. [0] And one that's just as misleading as sample-and-hold diagrams of digital audio that make people go out and buy really expensive DACs for reproducing ultrasonics they can't hear