On Nov 17, 2009, at 8:48 PM, dwight elvey wrote:
   Back in the
90's I noticed higher amperage mechanical contactors
 had large
 silver pads for contacts. Also some quick disconnect cables for
 power were
 silver as well. There are probably other industrial applications
 that use
 gold and silver that nobody notices.
 On a side note the ancient romans used to use silver staples to close
 wounds, something doctors might have started doing again recently. 
 We used to rewind slotcar motors with silver plated
 wire. Even though the plating was thin, it made
 a difference. 
 
   I^2R, with lots of I and a nontrivial R...I can easily see that
making a noticeable difference.
            -Dave
--
Dave McGuire
Port Charlotte, FL