Blu-ray Disc: New storage technology
The currently DVD and CD technologies used red laser to stored and reading data that it have 650 nanometer and 780 nanometer wavelength of DVD and CD. But the new technology to store and reading data to DVD and CD developed by Sony and Phillips have only 405 nanometer wavelength. Blu-ray, blue laser technology in storing and reading data is an optical storage format created to store large amounts of high definition video and sound. The color of the laser is a hue of blue-violet and has a shorter wavelength than the red lasers.
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