These pages have been ported to Google Sites, which I expect to be able to offer free web pages well into the future. Please link to the Google Sites page(s) rather than the Geocities page(s).
Please visit http://sites.google.com/site/resistorgrid/grid
I will keep the Geocities pages here in renamed files, in case there is some problem with the Google Sites pages.
The renamed files are appended with "-gc" (e.g. "http://www.oocities.org/frooha/grid/node3.html" => "http://www.oocities.org/frooha/grid/node3-gc.html"). Note that none of the internal links between pages will work anymore.