Blue Ray Disc

Blue Ray Discs also works on optical technology.

 

The storage capacity of a blue ray disc is normally 100 GB.
The one reason for this high storage capacity is the tight packing of data.

 

 

 

 

 

Pcking of Data in CD, DVD and Blue Ray Disc

 

 

Blue ray discs uses the violet and blue rays of the spectrum. While Cds and DVDs uses red. Red ray has the highest wave length and so it need more space. So the storage capacity reduces.
Blue and violet rays belongs to low wave lenth group. So the storage capacity of the disc increases because the rays uses less space.