What is the difference between a standard DVD player and a Blu-ray player?
DVD players show movies and other content at standard definition resolutions, while Blu-ray players show content at much higher resolutions. At a mechanical level, all DVD players use red lasers to read the information on the disc, while all high-def players use blue lasers. The blue lasers can read more information on each disc, and this extra information means the movie can be shown in higher definition. Blu-ray players use special high-def discs that won’t play on regular DVD players (since the red lasers aren’t sharp enough to read them), but all of your old DVDs will play back on the new Blu-ray players.
