Why Can Blu-rays Hold More Than DVDs?

Blu-rays can hold about ten times more than DVDs because Blu-ray players use special blue lasers to read them. But it took a while for scientists to figure out how to make those lasers work.

Hosted by: Michael Aranda
———-
Dooblydoo thanks go to the following Patreon supporters — we couldn’t make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, Philippe von Bergen, Chris Peters, Lilly Grainger, Happy Birthday!!, and Fatima Iqbal.
———-
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow

Or help support us by becoming our patron on Patreon:
https://www.patreon.com/scishow
———-
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow

Sources:

Basics on Blu-Ray & Optical Discs
http://www.blu-ray.com/faq/
http://www.explainthatstuff.com/cdplayers.html

Optics
http://www.edmundoptics.com/technical-resources-center/imaging/wavelength-effects-on-performance/
http://voer.edu.vn/m/aberrations/986b67d8

On Nakamura
http://www.nobelprize.org/nobel_prizes/physics/laureates/2014/nakamura-facts.html
http://www.npr.org/templates/story/story.php?storyId=5488821
https://goo.gl/LkpI82