A person with a -cm stride begins in the middle of the circle.
With each stride, the person is assigned a new random direction that is +/- degrees from their current direction.
How many steps will it take for the person to escape the circle? Press the play button and find out!
This random motion is known as a "random walk" or "Brownian motion", a phenomenon noticed by Robert Brown as he observed the motion of pollen grains in water. Albert Einstein later explained that the motion was due to the pollen being moved by individual water molecules.
(c) 2014, Tony Dunn