"The Matrix" conjures visions of Keanu Reeves as Neo on the silver screen, but matrices have a very real use in manipulating 3D graphics. John Chapman explains the true power of the matrix. Graphics series with John Chapman: 1/ Universe of Triangles : http://youtu.be/KdyvizaygyY 2/ Power of the Matrix : http://youtu.be/vQ60rFwh2ig 3/ Triangles to Pixels : http://youtu.be/aweqeMxDnu4 4/ Visibility Problem : http://youtu.be/OODzTMcGDD0 5/ Light and Shade in Computer Graphics: Coming Soon John Chapman is a graphics programmer who blogs here: http://www.john-chapman.net How NOT to store Passwords: http://www.youtube.com/watch?v=8ZtInClXe1Q Addendum - at 12:35 the formula should read: x*0+y*0+1*1 http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels