Question

WRITE A SHORT NOTE ON
BLU-RAY​

Answer 1

Answer:

Blu-ray is the successor to DVD. The standard was developed collaboratively by Hitachi, LG, Matsushita (Panasonic), Pioneer, Philips, Samsung, Sharp, Sony, and Thomson. It became the default optical disk standard for HD content and optical data storage after winning a format war with HD-DVD, the format promoted by Toshiba and NEC.

The format's name comes from the fact that a blue laser reads from and writes to the disc rather than the red laser of DVD players. The blue laser has a 405 nanometer (nm) wavelength that can focus more tightly than the red lasers used for writable DVD. As a consequence, a Blu-ray disc can store much more data in the same 12 centimeter space. Like the rewritable DVD formats, Blu-ray uses phase change technology to enable repeated writing to the disc.

                   I hope this answer will help you........

Answer 2

Answer:

A Blu-ray disc looks similar to a CD or a DVD but can store up to 25 GB data. To us ea Blu-ray disc, a Blu-ray disc reader is required. Some higher models of laptops have a Blu-ray reader.

Fact Bytes

The name Blu-ray is dervided from the technology that is used to read the disc: 'Blu' from blue-violet laser and 'ray' from an opitical ray.

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