A plasma television is a type of flat-screen display that uses small cells filled with gas to produce images. When electricity is applied, the gas turns into plasma, emitting ultraviolet light that excites phosphors on the screen, creating vibrant colors. Plasma TVs are known for their excellent color accuracy and wide viewing angles. These televisions were popular in the early 2000s but have largely been replaced by LED and LCD technologies due to their lower energy consumption and thinner designs. Plasma TVs typically offered larger screen sizes, making them ideal for home theaters, but they are now less common in the market.