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2. Blu-ray Disc recordable - Wikipedia

   en.wikipedia.org/wiki/Blu-ray_Disc_recordable

   Inspite of having the "Blu-ray" brand, "BDXL" is separate from the original "BD" format, meaning existing Blu-ray drives that predate the release of BDXL (mid-2010) do not support BDXL. Even Blu-ray drives released after then do not necessarily support BDXL unless explicitly stated. [22]

3. Optical storage media writing and reading speed - Wikipedia

   en.wikipedia.org/wiki/Optical_storage_media...

   For Blu-ray discs, 1× speed is defined as 36 megabits per second (Mbit/s), which is equal to 4.5 megabytes per second (MB/s). [7] However, as the minimum required data transfer rate for Blu-ray movie discs is 54 Mbit/s, the minimum speed for a Blu-ray drive intended for commercial movie playback should be 2×. The fastest Blu-ray speed is 16×.

4. Comparison of popular optical data-storage systems - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_popular...

   With the development of high-definition television, and the popularization of broadband and digital storage of movies, a further format development took place, again giving rise to two camps: HD DVD and Blu-ray, based upon a switch from red to blue-violet laser and tighter engineering tolerances. As of 2007 both have significant releases in the ...

5. Optical disc drive - Wikipedia

   en.wikipedia.org/wiki/Optical_disc_drive

   DVD lens supports a different focus for CD or DVD media with same laser. With the newer Blu-ray Disc drives, the laser only has to penetrate 0.1 mm of material. Thus the optical assembly would normally have to have an even greater focus range. In practice, the Blu-ray optical system is separate from the DVD/CD system.

6. Boeing’s terrible year is ending with the worst aviation ...

   www.aol.com/boeing-terrible-ending-worst...

   Boeing’s very bad year ended tragically on Sunday, as a 737 flown by Korean discount carrier Jeju Air crashed, killing 179 passengers and crew on board.. It’s not yet clear what caused the jet ...

7. DHL plane crash in Lithuania likely due to technical issue ...

   www.aol.com/news/lithuania-leans-towards...

   VILNIUS (Reuters) -Lithuania has found no sign that the crash on Monday of a DHL cargo plane was caused by sabotage, and believes technical issues were a more likely explanation, officials said on ...