area of a circle

Published on May 29, 2012 Prove πR² using only beads and a ruler! I first saw this proof in an article by Russell Jay Hendel, Dowling College: http://bit.ly/LQlwQw minutephysics is now 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 […]

Published on May 29, 2012

Prove ?R² using only beads and a ruler!

I first saw this proof in an article by Russell Jay Hendel, Dowling College: http://bit.ly/LQlwQw

minutephysics is now 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