What's: Blu Ray Disc
Following format of the DVD. In contrast to CD and DVD, blu ray discs are read by a blue laser. This allows finer data structures and results in larger storage capacities. One blu ray disc holds up to 27GB of data, which corresponds to approximately 13 hours video in DVD resolution (PAL: 720x576 pixel).
Blu Ray Disc im deutschen Lexikon
Blu Ray Disc in het nederlandse encyclopedie