This is the greatest invention as far as Storage Discs are concerned.......
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 single layer Blu-ray Disc can store 25 gigabytes (GB), over five times the size of a single layer DVD at 4.7 GB. A dual layer Blu-ray Disc can store 50 GB, almost 6 times the size of a dual layer DVD at 8.5 GB.
Blu-ray Disc is similar to PDD, another optical disc format developed by Sony (which has been available since 2004) but offering higher data transfer speeds. PDD was not intended for home video use and was aimed at business data archiving and backup.
Blu-ray Disc is currently in a "format war" with rival format HD DVD.
The Blu-ray Disc system uses a blue-violet laser operating at a wavelength of 405 nm, similar to the one used for HD DVD, to read and write data hence the name.
Conventional DVDs and CDs use red and infrared lasers at 650 nm and 780 nm respectively.
The difference between CD , DVD and BLU RAY can be vividly understood by the following pictures............
This is the Way which a CD works......
This is the Way which a DVD works......
This is the Way which a BLU RAY works......
Here are a few BLU RAY players......
The alonside picture given is that of the cheapest BLU RAY player availlable............
The sony Playstation 3....
Here's what the BLU RAY drive looks from the inside..........
So guys, I hope this information was good.............................
If u need any more info u can always search GOOGLE from my blog.........
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