18 Mar
2013
18 Mar
'13
1:48 p.m.
Compare to pictures of the actual chain / lantern of the White House, just google "white house pictures". The item in the bill looks close to the many physical pictures. --Ed Pegg jr --- On Mon, 3/18/13, James Propp <jamespropp@gmail.com> wrote: From: James Propp <jamespropp@gmail.com> Subject: [math-fun] Twenty-dollar question To: "math-fun" <math-fun@mailman.xmission.com> Date: Monday, March 18, 2013, 2:03 PM Is the hanging chain on the back of the $20 bill mathematically correct? It looks more like a parabola than a catenary to me. Jim Propp _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun