3D television is a technology that allows viewers to experience images in three dimensions, creating a more immersive viewing experience. It works by displaying two slightly different images simultaneously, one for each eye, which the brain then combines to perceive depth. This effect can be achieved using special glasses or advanced display technologies. The content for 3D television can come from movies, sports, and video games, enhancing the realism of the visuals. While it gained popularity in the early 2010s, the demand for 3D TVs has declined in recent years due to the rise of other viewing technologies and streaming options.