You have two identical looking metal bars. One of them is a magnet, with North and South ends. The other is simply an iron bar (which is attracted by magnets).
How can you tell which is which, using only these two bars?
(In reply to re: Reply to John
OK, good, that's what I was getting at in my last post. At least we're on the same page!
Posted by John
on 2005-01-25 17:09:56