My Tech notes: Define:Blu-ray & About Blu-ray Movies HDTV Info
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Wednesday, July 22, 2009

Define:Blu-ray & About Blu-ray Movies HDTV Info

The Advancement of technology had entered into nanometer age. search in google define:Blue-ray will get wiki pages here is summary of it. Blu-ray Disc (also known as Blu-ray or BD) is an optical disc storage medium designed to supersede the standard DVD format. Its main uses are for storing PlayStation 3 games, high-definition video, and data storage, with up to 50 GB per disc. This is quite impressive, The disc has the same physical dimensions as standard DVDs and CDs.
Why Blu-ray disc stores 50GB on same size of DVD/CD?
Well here is advancement of laser technology, thanks to Shuji Nakamura for his invention on blue laser,
The name Blu-ray Disc derives from the blue-violet laser used to read the disc. While a standard DVD uses a 650 nanometre red laser, Blu-ray uses a shorter wavelength, a 405 nm blue-violet laser, and allows for almost six times more data storage than on a DVD.
check out about
Blu-ray Movies - Everything about Blu-ray movies and releases.at http://www.blu-ray.com/movies/
Few interesting stuff from Blu-ray FAQ
How much data can you fit on a Blu-ray disc?
A single-layer disc can hold 25GB.
A dual-layer disc can hold 50GB.
How much video can you fit on a Blu-ray disc?
Over 9 hours of high-definition (HD) video on a 50GB disc.
About 23 hours of standard-definition (SD) video on a 50GB disc.
Why should I upgrade from DVD to Blu-ray?
The simple answer is HDTV.
visit http://www.blu-ray.com

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