Why is the wavelength of light used to read data on DVD's smaller than the minimum pit length? - Quora
Why is the wavelength of light used to read data on DVD's smaller than the minimum pit length? - Quora
![Brian Roemmele on X: "A Blu-Ray laser is a blue solid-state strained quantum well laser diode that exploits weird physics to work. Quantum well devices trap electrons into a space about the Brian Roemmele on X: "A Blu-Ray laser is a blue solid-state strained quantum well laser diode that exploits weird physics to work. Quantum well devices trap electrons into a space about the](https://pbs.twimg.com/media/FaBEmJXVQAEO7WK.jpg:large)
Brian Roemmele on X: "A Blu-Ray laser is a blue solid-state strained quantum well laser diode that exploits weird physics to work. Quantum well devices trap electrons into a space about the
![How Blu-Ray Discs Work Encodes data onto a disc by creating pits with a laser that can be read as binary code, just like CDs and DVDs. Uses 405nm blue. - ppt How Blu-Ray Discs Work Encodes data onto a disc by creating pits with a laser that can be read as binary code, just like CDs and DVDs. Uses 405nm blue. - ppt](https://images.slideplayer.com/25/8134316/slides/slide_2.jpg)