Blu-ray Blu-ray http://electronics.howstuffworks.com/blu-ray.htm How Blu-ray Discs Work Blu-ray Blu-ray - Electronics - HowStuffWorks How Blu-ray discs work. Blu-ray Blu-ray Discs (3. How Blu-rays Work) How Blu-ray discs work. Blu-ray Blu-ray discs http://electronics.howstuffworks.com/blu-ray.htm/ How Stuff Works How Stuff Works How Stuff Works