Return-Path: Received: (qmail 9762 invoked from network); 8 Nov 2002 12:24:40 -0000 Content-Transfer-Encoding: 8bit Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 8 Nov 2002 12:24:40 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 25590 invoked by uid 10001); 8 Nov 2002 12:26:46 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 8 Nov 2002 12:26:46 -0000 Received: from majordom by post.thorcom.com with local (Exim 4.10) id 18A8D6-0003ms-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 08 Nov 2002 12:26:04 +0000 Received: from [212.164.44.2] (helo=astral.omskcity.com) by post.thorcom.com with esmtp (Exim 4.10) id 18A8D5-0003mK-00 for rsgb_lf_group@blacksheep.org; Fri, 08 Nov 2002 12:26:03 +0000 Received: from fitec.omskcity.com (mu07.dialup2.infomsk.ru [212.164.44.119]) by astral.omskcity.com (8.9.3/8.9.3) with SMTP id SAA3dcbacad38fd for ; Fri, 8 Nov 2002 18:23:09 +0600 (OS) Date: Fri, 8 Nov 2002 18:22:45 +0000 (GMT) From: "Alexander S. Yurkov" To: "LF Group \(E-mail\)" In-reply-to: <7D653C9C42F5D411A27C00508BF8803DCB9CBB@mail.dstl.gov.uk> Message-ID: MIME-Version: 1.0 Subject: Re: LF: To Ponder over the weekend Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Status: No, hits=-1.6 required=5.0tests=DATE_IN_FUTURE_03_06,EMAIL_ATTRIBUTION,IN_REP_TO, QUOTED_EMAIL_TEXT,SPAM_PHRASE_00_01,USER_AGENT_PINEversion=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Hi, Andrew and Group. On Fri, 8 Nov 2002, Talbot Andrew wrote: > An oil filled capacitor consists of two plates separated by a dielectric > made of oil with a dielectric constant of 10. The capacitance is 10uF and > it is charged to 10V. The oil is drained, leaving air between the plates. > the capacitance falls to 1uF. Does the stored energy level change?. If so, > where did the extra energy come from or go to? This is simple - hi... When C decreases from 10 uF to 1 uF voltage increases from 10 V to 100 V So energy E=C*U^2/2 changes from 1e-5*10*10/2=0.5e-3 J to 1e-6*100*100/2= 0.5e-2 J. Where did extra energy come from? To drain oil one SHOULD work! Oil is ATRACTED to space betwin plates by electric field! Do drain it extra energy is needed. For example the energy of gravity... So this is a machine converted mecanical energy to electrical energy. It is known some devises worked in such a way (Von de Graaf geneator, there is some analogy)... 73 de RA9MB/Alex http://www.qsl.net/ra9mb