Learn more about the Teacher Loan Forgiveness program, eligibility requirements, and how to apply. (If you aren't already logged in, you'll be asked to do so.) Note: You may not receive a benefit for the same qualifying payments or period of service for Teacher Loan Forgiveness and Public Service Loan Forgiveness.
What is Blu-ray? Blu-ray, also known as Blu-ray Disc (BD) is the name of a new optical disc format that is rapidly replacing DVD. The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data.
Blu-ray Defined. Blu-ray is a high-definition optical disc format. By using a blue-violet laser, as opposed to the standard red laser to read and record data, Blu-ray allows for the storage of high-definition video and large amounts of data.tandard DVDs are recorded and read using a 650nm red laser. Blu-ray uses a 405nm blue-violet laser. This shorter wavelength allows the laser to be focused with more precision, which allows more data to be packed in the same space.