Hi Gary:
You said: "0.199 V and 0.693 mA correspond to an impedance of about 300 ohms. For the human body we often use about 1,500 ohm as a model. So I wonder if the cows' problem stems from the fact they are relatively good electrical conductors." Consider that the cow has four wet connections to the earth. And a fifth connection when eating wet grass. And a sixth connection when... For wet and medical conditions, the human body resistance is taken at 750 and 500 ohms, respectively. (For wet conditions, we halve the voltage and the current, which is more-or-less the same as halving the body resistance.) A big animal should have smaller resistance than a human. So, yes, the cow is a relatively good electrical conductor. Best wishes for the holiday season, Rich - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] 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 [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
