What is blu-ray?

Blu-ray is a high-definition optical disc format that was introduced in 2006. It was developed jointly by the Blu-ray Disc Association, a group of over 1200 electronics, computer, and media companies. A Blu-ray disc can hold up to 50 gigabytes of data and can store video up to 4K resolution. Unlike DVD, it uses a blue-violet laser to read and write data, which allows for more precise data storage and smaller pits on the disc. Blu-ray discs are commonly used for movies, TV shows, and video games and are often bundled with special features and bonus content. They are also commonly used for archival storage because of their high capacity and durability. However, they require special players that are compatible with the Blu-ray format, and the cost of the discs and players can be higher than those for DVDs.