That is certainly true, but the problem here is there is an error one is not aware of, although this is an extreme example.
Doug Smith Sent from my iPhone IPhone: 408-858-4528 Office: 702-570-6108 Email: d...@dsmith.org Website: http://dsmith.org On Fri, Jan 26, 2018 at 17:34, Richard Nute <ri...@ieee.org> wrote: Hi Doug: While I don’t yet have the answer (and may never have the answer), I ran across this quote from Luigi Galvani which I think applies here: “For it is easy in experimentation to be deceived, and to think one has seen and discovered what we desire to see and discover.” Best regards, Rich From: Doug Smith [mailto:d...@emcesd.com] Sent: Friday, January 26, 2018 2:50 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Measurement dilema Hi All, Can you explain the result in this video I just made? Scope plots of the same two nodes are completely different. Probes and scope are operating normally, no problem with the equipment itself. If you have been to my seminars you know the answer, please do not post the answer unless you have not seen this experiment until now. Hint 1: There are no EM fields radiating from the shielded box affecting the probes. Hint 2: There are no active components inside the box. https://youtu.be/qj-HBFMEJiY [https://youtu.be/qj-HBFMEJiY] Doug - ---------------------------------------------------------------- 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 [emc-p...@ieee.org] > All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html [http://www.ieee-pses.org/emc-pstc.html] Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ [http://product-compliance.oc.ieee.org/] can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ [http://www.ieee-pses.org/] Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) [http://www.ieee-pses.org/list.html] List rules: http://www.ieee-pses.org/listrules.html [http://www.ieee-pses.org/listrules.html] For help, send mail to the list administrators: Scott Douglas < sdoug...@ieee.org [sdoug...@ieee.org] > Mike Cantwell < mcantw...@ieee.org [mcantw...@ieee.org] > For policy questions, send mail to: Jim Bacher < j.bac...@ieee.org [j.bac...@ieee.org] > David Heald < dhe...@gmail.com [dhe...@gmail.com] > - ---------------------------------------------------------------- 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.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>