>After all, young engineers >trust senior engineers to vet what they say to make sure it is valid before >they say it - and they have a right to expect this. I remember a few years ago when I first bumped into this topicon this list. I am an SI novice. I do analog, E&M and some speed digital. I studied field theory extensively back when I was a grad student (specializing in Continuum Electromechanics) but never had to work with hgih speed digital. I believed the right angle thing, as was disabused of that misconception those years ago from the SI discussion then. You want closed form analytic solutions to del-squared equations in weirdo coordinate systems? I can do that! But when it comes to building systems, you need to know what works and what don't. These days I do plasma physics instrumentation for a Physics group at Dartmouth that puts instruments on rockets that NASA supplies. We have students do much of the building, with help, of course, and then we test and test and test. I always want to make sure that what I tell the students is real-world-valid. When I do HV stuff, I do know to avoid sharp corners, but for signal traces ... _______________________________________- I've been working at Dartmouth College for the last 8+ years with a group that investigates aurora (and related stuff) by shooting instruments on rockets through the aurora. Here are some rocket related photo links, and some links to old technical books I've posted on line. http://www.dartmouth.edu/~aurora/personnel/rhoads.html Rocket stuff: http://www.facebook.com/album.php?aid=2007194&id=1338500958&l=8e797b638b ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu