Blue links lead to the fully translated html versions of the page, purple links lead to pages whose start pages (as well as introductions and tables of contents at least) are already set up, green links lead to extern sites, grey means that no file is available yet).
/Notes in this color and between two / are from the operator of the German mirror site and translator/.
Img.224 (#D4):
The above photo shows myself (i.e. Dr. Eng. Jan Pająk) holding in my hands a brand-new Wimshurst electrostatic machine that I purchased in Poland for the equivalent of about $100 at a store supplying schools with teaching aids (once called CEZAS).
