# Experiment …… <a href="http://bl.ocks.org/3116713" title="view this gist via bl.ocks.org">?</a> <a href="http://bl.ocks.org/GerHobbelt" title="view a list of all my gists at bl.ocks.org">8</a>

copy of [http://mbostock.github.com/d3/talk/20111018/collision.html](http://mbostock.github.com/d3/talk/20111018/collision.html)