[quote author=lookang link=topic=539.msg4347#msg4347 date=1243906660]

Can make it almost like the physlets charge applet? I wish to study how to do it.

I don't think i can figure out this one, simply too advance for me to redo in Ejs. :(

May i request more comments line to help others like me understand and learn how to model it in Ejs. Thanks!