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Newton's balls
<!DOCTYPE html> <html> <head> <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script> <script type="text/javascript" src="d3.z.collide.js"></script> <style> .ball { fill:steelblue;stroke:black} .wire {stroke:black;stroke-widh:1;fill:none} </style> </head> <body> <script type="text/javascript" src="app.js"></script> </body> </html>
Modified
http://d3js.org/d3.v3.min.js
to a secure url
https://d3js.org/d3.v3.min.js