The standard red and green lasers (and more commonly invisible infra-red lasers) in CD and DVD players are being replaced by blue-violet lasers in the new “Blu-ray” DVD format. The shorter wavelength of blue light allow for the pits on the surface of the disc to be placed at a higher density, creating disks capable of holding 27GB of data compared to the 4.7GB on traditional DVD’s.
If you think thats alot of storage for one disk, tomorrow will be even better!
