In a message dated 97-12-10 14:14:07 EST, you write:

<< >With a sensitive instrumentation amp you can measure the voltage
 difference >between your feet and your head (usually a couple hundred volts
 over six feet).

 This is really interesting!

 But if it's a couple of hundred volts, why do you need a sensitive
 instrument amp?

 Bruce
  >>
Also, if this is true (now that we are thinking about it) why do we not notice
it in this case, but if we put a 115V mains on our head and stood on a copper
pipe to earth we would be paramedic material??

Mark A. Corio
Rochester MicroSystems, Inc.
200 Buell Road, Suite 9
Rochester, NY  14624
Tel: 716-328-5850
Fax: 716-328-1144
http://www.frontiernet.net/~rmi/
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