Description from the article:
The Twitter account @555uhz was/is a script that posted sequential stills of the major motion picture Top Gun every half hour on the :15 and :45s. The twice-an-hour rate of posting is the account’s title: .000555 frames per second is .000555 Hertz is 555 microHertz (uHz). It was a flipbook: spool up and down the account at about 24 frames per second (the typical framerate of a movie and the rate at which human eyes cease perceiving blackness in between frames) and you would kinda-sorta be watching the movie, at least a muted version of it in segments whose lengths are subject to how much of the account you have loaded in your browser. More likely, you’d be beginning to wonder what watching a movie even is.