What is Blu-Ray and how is it different from a regular DVD disc?
Think about Blu-Ray as an advanced version of a DVD disc. Blu-Ray optical discs are used to store large amounts of data, which is suitable for high-definition video and high-density data. It’s the next-generation optical disc format jointly developed by a group of computer and consumer electronics companies, called the Blu-Ray Disc Association (BDA). Compared to a traditional DVD or HD DVD, a standard single-layer Blu-Ray disc can hold much more data — 25 GB versus 5 GB for standard DVD or 8.5 GB on a dual-sided HD DVD. A dual layer Blu-Ray disc can hold up to 45 to 50 GB of data. This means a dual layer disc can play 8 hours of HD video. But wait… there’s more! Researchers are also developing 100 GB and 200 GB Blu-Ray discs. (Sorry, no steak knives.) A Blu-Ray disc gets its name from the blue-violet laser used to store data on the disc. This shorter wavelength of the ray (405 nm) and tighter track pitch facilitates more precise storage of data, and higher storage capacity. A conventi
