Braids. Chapter 3 - The world of knots
Channel: Ester Dalvit
Date: 2013-08-27

Chapter 3 of my movie about braids. 
Chapter 4: http://www.youtube.com/watch?v=WxKs3GtxUbk
Chapter 2: http://www.youtube.com/watch?v=VhryJaoJT1Q
Music by Raul Masu.
Homepage: http://matematita.science.unitn.it/braids/