Hi Dan, I think that you have nailed it. I remember now that it was 0.9 microampere per square millimeter. Best Regards, Arnold Beland www.atlasnova.com ----- Original Message ----- From: Dan Nave To: Arnold Beland Sent: Wednesday, May 02, 2007 7:33 AM Subject: RE: CS>Any techies left?
1 square inch = 645.16 square millimeters. (645 sq mm/sq inch) x (.000009 amps/sq mm) = .0058 amps = 5.8 ma/sq in If the calculations are correct, that is 5.8 milliamps per square inch of (anode) surface area. That is not a particularly small value for the current. Most here are making it at 1 ma / sq inch. Dan ----- Original Message ----- From: Dan Nave To: Arnold Beland Sent: Wednesday, May 02, 2007 7:33 AM Subject: RE: CS>Any techies left? 1 square inch = 645.16 square millimeters. (645 sq mm/sq inch) x (.000009 amps/sq mm) = .0058 amps = 5.8 ma/sq in If the calculations are correct, that is 5.8 milliamps per square inch of (anode) surface area. That is not a particularly small value for the current. Most here are making it at 1 ma / sq inch. Dan ------------------------------------------------------------------------------ From: Arnold Beland [mailto:abela...@comcast.net] Sent: Wednesday, May 02, 2007 1:09 AM To: silver-list@eskimo.com Subject: Re: CS>Any techies left? Hi Wayne, The 9 Microamps per square millimeter was a figure that related to the total surface area of the anode. The discussion went on when most of us were using Canadian Maple Leaf coins for anodes as they were the only available source of 9999 pure silver at the time. They had a diameter of 30 odd mm so if you use both sides and the edge you would end up at around 2 milliamps. Best Regards, Arnold Beland www.atlasnova.com ----- Original Message ----- From: CWFugitt To: silver-list@eskimo.com Sent: Tuesday, May 01, 2007 8:33 PM Subject: CS>Any techies left? Evening Arnold, >> At 04:34 PM 5/1/2007, you wrote: A figure of nine microamperes per square millimeter is lodged somewhere in my brain but I can't remember how we arrived at that. Has anyone kept a record of these postings? Few of us have all the messages. I have many thousands. If you have a subject line, or a unique phrase, I can find them in short order. And there are a few techies left. But few of us have a micro amp meter. I would hope you have milliamps and micro amps mixed up. I could likely rig a micro amp measurement using some of my $100 digital panel meters if I thought it to be that important. You can make excellent CS and never measure micro amps. Few people even measure milliamps. How much are you measuring at the present? Wayne
