Return-Path: <sentto-279987-4247-1010508156-fc=all.net@returns.groups.yahoo.com> Delivered-To: fc@all.net Received: from 204.181.12.215 [204.181.12.215] by localhost with POP3 (fetchmail-5.7.4) for fc@localhost (single-drop); Tue, 08 Jan 2002 08:44:07 -0800 (PST) Received: (qmail 6018 invoked by uid 510); 8 Jan 2002 16:42:57 -0000 Received: from n11.groups.yahoo.com (216.115.96.61) by all.net with SMTP; 8 Jan 2002 16:42:57 -0000 X-eGroups-Return: sentto-279987-4247-1010508156-fc=all.net@returns.groups.yahoo.com Received: from [216.115.97.190] by n11.groups.yahoo.com with NNFMP; 08 Jan 2002 16:42:36 -0000 X-Sender: david.alexander@bookham.com X-Apparently-To: iwar@yahoogroups.com Received: (EGP: mail-8_0_1_3); 8 Jan 2002 16:42:35 -0000 Received: (qmail 96731 invoked from network); 8 Jan 2002 16:42:35 -0000 Received: from unknown (216.115.97.167) by m4.grp.snv.yahoo.com with QMQP; 8 Jan 2002 16:42:35 -0000 Received: from unknown (HELO mimesweeper.bookham.com) (195.166.17.164) by mta1.grp.snv.yahoo.com with SMTP; 8 Jan 2002 16:42:35 -0000 Received: from alpha.bookham.com (unverified) by mimesweeper.bookham.com (Content Technologies SMTPRS 4.2.5) with ESMTP id <T585362d608c0a801020c6@mimesweeper.bookham.com> for <iwar@yahoogroups.com>; Tue, 8 Jan 2002 16:41:48 +0000 Received: by alpha.bookham.com with Internet Mail Service (5.5.2650.21) id <CC407X10>; Tue, 8 Jan 2002 16:38:58 -0000 Message-ID: <86F477BCF025D411912F00508BACC30A0444F2B4@alpha.bookham.com> To: 'iwar submissions' <iwar@yahoogroups.com> X-Mailer: Internet Mail Service (5.5.2650.21) From: David Alexander <david.alexander@bookham.com> X-Yahoo-Profile: lurcio70 Mailing-List: list iwar@yahoogroups.com; contact iwar-owner@yahoogroups.com Delivered-To: mailing list iwar@yahoogroups.com Precedence: bulk List-Unsubscribe: <mailto:iwar-unsubscribe@yahoogroups.com> Date: Tue, 8 Jan 2002 16:38:55 -0000 Subject: [iwar] re: e-bombs Reply-To: iwar@yahoogroups.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit >E-BOMB >In the blink of an eye, electromagnetic bombs could throw civilization >back >200 years. And terrorists can build them for $400. BY JIM WILSON People write these sensationalist articles with no understanding of the physics. The field strength decay follows the inverse cube law. Now figure how big an impulse the bomb has to generate to give a strong enough field to do damage at 50 metres. You don't make a faraday cage, you make a faraday box out of sheet metal, and an 'airlock' door system with knife edge seals, just like those on most NMR scanner rooms in hospitals. Easy to do and I've seen plenty of them in my time. If you can design ones to stop the EMP from a 'bucket of instant sunshine' (and they have) you can stop anything. As for spikes, a huge spike suppressor (massive lump of iron works very nicely) will sort that out. Directed military weapons may be different - often you have intel on the weapons you want to hit and know what freq. They are vulnerable to, you then tune and direct your energy, rather than being broad-spectrum. Very much like the ALQ pods on Wild Weasels, etc. On average this same subject seems to come up every 9 months. The press think they have a new angle - and they do...on ignorance. David Alexander M.INSTIS Global Client-Server, Communications & Infrastructure Director Bookham Technology plc DDI: 01235 837823 Mobile: 0779 988 1284 David.Alexander@Bookham.com ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. ======================================================================= Any questions about Bookham's E-Mail service should be directed to postmaster@bookham.com. ------------------------ Yahoo! Groups Sponsor ---------------------~--> Tiny Wireless Camera under $80! Order Now! FREE VCR Commander! Click Here - Only 1 Day Left! http://us.click.yahoo.com/WoOlbB/7.PDAA/ySSFAA/kgFolB/TM ---------------------------------------------------------------------~-> ------------------ http://all.net/ Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
This archive was generated by hypermail 2.1.2 : 2002-12-31 02:15:02 PST