The dissolving in salt water is a matter of course, actually. I used to work on fixed sonar equipment. It's astounding - the first time - what happens to dissimilar metals in salt water when there is a small current flow for one reason or another. But quickly you just learn from your elders: tell the customer not to violate the installation instructions. And tell them not to bother to sue. They'll lose.
Jeff On Fri, Sep 21, 2012 at 9:04 PM, Eric Walker <eric.wal...@gmail.com> wrote: > On Fri, Sep 21, 2012 at 8:57 PM, Jones Beene <jone...@pacbell.net> wrote: > > Ohmic heating is fully conservative, and if you put in 10 watts of electric >> power and get back 12 watts of heat, then either it is measurement error… >> or >> … not exactly Joule heating. >> > > Just to clarify -- I enjoyed the report. I also took particular pleasure > in hearing about the nickels that others ended up dissolving; I didn't know > that would happen. I was curious -- what were the details of the power > measurements? Was the signal steady or did it fluctuate? Did you do any > kind of calibration? > > Eric > >