https://www.explainthatstuff.com/how-3d-tv-works.html

by Chris Woodford. Last updated: January 26, 2020.

Back in the 1890s, when French cinema pioneers Auguste and Louis Lumière screened their early movie of a train arriving at a station, legend has it that terrified members of the audience dived to one side to get out of its way. Despite all kinds of technological innovations in the decades since then, movies and TV never again seemed quite so convincing. Just over a century later, it seemed affordable three-dimensional television (3D TV) would usher in a new age of super-realistic entertainment, and the big TV manufacturers, such as Sony, Panasonic, LG, and Toshiba, soon started throwing their weight behind 3D technology. Unfortunately, consumers haven't been anything like as keen on watching 3D pictures at home and, for now at least, the revolution seems to have stalled: in 2013, The New York Times officially declared it "an expensive flop"; by 2017, leading makers such as Sony, LG, and Samsung had decided to drop the technology entirely. Despite that, 3D TV is still a fascinating technology, so let's take a closer look at how it works!
I always liked the thought of watching television in real three dimensions. Here is an article about this.