Go to http://harrys.com and use offer code MINUTEPHYSICS for $5 off!

Full circle rainbow image licensed from Birdseye View Photography http://www.birdseyeviewphotography.com.au/

Awesome website about rainbows: http://www.atoptics.co.uk/bows.htm

And thanks to the following subbable supporters:
Niels de Bruijn
Ari S. Pollak
youtube.com/jigsawfanclub
www.quantumrealityproject.com

MinutePhysics is on Google+ - http://bit.ly/qzEwc6
And facebook - http://facebook.com/minutephysics
And twitter - @minutephysics

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Music by Nathaniel Schroeder http://www.soundcloud.com/drschroeder Created by Henry Reich