What is a blueray disc. And the complete information regarding it.?

Question

What is a blueray disc. And the complete information regarding it.?

Answer 1

Blueray stores more on it than a regular DVD.

Answer 2

Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage media format. Its main uses are high-definition video and data storage. The disc has the same dimensions as a standard DVD or CD.

The name Blu-ray Disc is derived from the blue-violet laser used to read and write this type of disc. Because of its shorter wavelength (405 nm), substantially more data can be stored on a Blu-ray Disc than on the DVD format, which uses a red (650 nm) laser. A dual layer Blu-ray Disc can store 50 GB, almost six times the capacity of a dual layer DVD.

For more information : http://en.wikipedia.org/wiki/Blu-ray