Focusing on blu-ray technology
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With all the recent moves by the industry to embrace the HD market, some may still wonder why the big fuss over Blu-ray – what is it? Simply put, Blue-ray technology uses a blue-violet laser (405nm) that has a much shorter wavelength than the previous red laser (650nm) technology. This hyper-focused laser allows digital information to be stored in less physical space (because our plastic discs aren’t getting any bigger) which obviously allows for more information storage on a single disc (25GB/50GB).
For more information on Blu-ray - http://www.blu-ray.com/