Blu-ray disk was introduced as a replacement for traditional DVD. It’s underlying technology is optical storage which is  as same as CD/DVD and it’s main usage is storing high definition videos, Play Station 3 games, and other data up to 50 GB. Blu-ray disc allows around 10 times more data storage as it uses a 400nm blu-violet laser wavelength while a standard DVD uses a 650nm red laser. With...