CD DVD & Blu-ray Accessories

Blu-ray DVD Drive is widely used for playing HD (High-Definition) video. It represents the third generation of CD Drive tech, after DVDs (Digital Video Discs) and audio compact disks. In all three technologies, information is stored on a plastic disc which is 120 millimeters in dia. The data/information is encoded in depths that form a winding track on the disc. The blue laser, creating at 405 nanometers of wavelength, reads the pits. A Blu-ray disc can keep more data than an optical drive. An exclusive single-layer Blu-ray can keep 25 GB, and a double-layer holds 50 GBs. By difference, a single-layer DVD can hold only 4.7 GB.