In message <1937.66.81.215.25.1257470854.squir...@cp01.sfo.com>, dated Thu, 5 Nov 2009, m...@sfo.com writes:
>solid ribbon copper conductor, 1 inch wide and 120 mils thick > copper tube, 0.75 inch outside diameter and 120 mils wall thickness > >The two circumferences are approximately the same. > Rectangle 2 * (0.12+1) = 2.24 inches > Tube pi * 0.7 = 2.20 inches Why 0.7? The OD is 0.75, giving a circumference of 2.36 inches. Also, the criterion used to claim that flat is better is 'circumference per kilo(gram)'. What are the lineal densities of your example conductors? -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Help stamp out intolerance! - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
