https://arstechnica.com/gadgets/2018/01/video-demonstrates-the-marvel-of-crt-displays-at-380000-frames-per-second/

We spend a lot of time reading about the differences between display technologies like LCD and OLED, which, like all display technologies, are built to fool our eyes into seeing things that are only simulated, not real, like colors, or realistic movement. But it helps to see it in action.

A video from YouTube channel The Slow Mo Guys (originally reported on by Motherboard) vividly illustrates how CRT, LCD, and OLED displays work by either zooming in very close, or recording them in action at insane framerates for ultra slow motion.