What is Blu-ray?
Does it have something to do with the color Blue??
Ever wonder what that means? Dues the color blue have anything to do with it? It actually does! While a regular DVD uses a red laser to read data from a disk, a blu-ray device uses a blue laser. A blue laser has a much shorter wavelength (405 nanometers), over its red cousin (650 nanometers). This allows a huge increase in data in the same amount of space. Additionally transfer rates on Blu-ray disks are up to three and a half times those on DVD’s! This allows for more detail and higher quality videos. Additionally Blu-Rays are a more secure media for the film industry with its encryption system.
Blu-rays have more uses than just the film industry. Because of more compact data a Blu-ray disk can hold up to 27 Gigabytes of data on a single layer disk. Double the layers, and you get a whopping 54 Giga bytes and research is believed to soon unlock double that! This allows you to completely backup your computer files in only a few disks opposed to stacks of DVD’s. All these benefits come at a cost though. Despite advances in manufacturing, Blu-rays are more expensive than conventional DVD’s.
Are Blu-rays worth the extra cost? They provide better pictures, and a vast media to store tons of data. It really depends on your needs.