In reply to Terry Blanton's message of Thu, 3 Aug 2006 07:33:44 -0400: Hi,
Could there be microscopic holes in the plastic allowing the water to make contact with the underlying Al? Is there an AC ripple on your power supply (or are you using a battery)? Is there a ground connection to the Al tray? >On 8/3/06, Robin van Spaandonk <[EMAIL PROTECTED]> wrote: > >> Perhaps it's just dissolved gas in the water forming a bubble at >> the site of a "dislocation" in the surface of the Teflon. Perhaps >> it got scratched somewhat when you put the assembly in the tray? > >In which case they would form in rows. They seem to be randomly >distributed in a limited area. > >> A simple test might be to make a deliberate scratch somewhere, and >> see if it collects bubbles. Is the tray itself plastic all the way >> through, or just a plastic coating on metal? > >Coated aluminum. Obviously some kind of capacitive field effect which >only applies to the positive anode and a neutral metal with a >interceding dielectric. > >Terry Regards, Robin van Spaandonk http://users.bigpond.net.au/rvanspaa/ Competition provides the motivation, Cooperation provides the means.
