Wes Stewart wrote:
On Tue, 28 Feb 2006 04:00:37 -0800, Roy Lewallen
wrote:

Big Endian wrote:
I suppose the right thing to do is to place ferrite cores on all the
conductors in the area. Could get expensive. I have so many wires all
over the place the job seems a bit hopeless.
. . .
Well, that's one way to solve the problem. Like the sign over my desk
says, "Anyone can design a bridge that will stand up. It takes an
engineer to design a bridge that will barely stand up."

Or not [g]

http://www.ketchum.org/bridgecollapse.html

Ah, yes, the Tacoma Narrows bridge. That movie played continuously in
the lobby of the Engineering Building at the U. of Colorado most of the
time I was going there. For anyone interested in this topic, I recommend
_To Engineer is Human: The Role of Failure in Successful Design_ by
Henry Petroski.

The whole trick, of course, is to stay on the right side of "barely".

Roy Lewallen, W7EL