From owner-freebsd-hackers@FreeBSD.ORG Tue Aug 23 12:57:23 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8748B16A41F for ; Tue, 23 Aug 2005 12:57:23 +0000 (GMT) (envelope-from oceanare@pacific.net.sg) Received: from smtpgate1.pacific.net.sg (smtpgate1.pacific.net.sg [203.120.90.27]) by mx1.FreeBSD.org (Postfix) with SMTP id 6C8F543D45 for ; Tue, 23 Aug 2005 12:57:22 +0000 (GMT) (envelope-from oceanare@pacific.net.sg) Received: (qmail 11992 invoked from network); 23 Aug 2005 12:57:20 -0000 Received: from maxwell6.pacific.net.sg (203.120.90.212) by smtpgate1.pacific.net.sg with SMTP; 23 Aug 2005 12:57:20 -0000 Received: from [192.168.0.107] ([210.24.246.165]) by maxwell6.pacific.net.sg with ESMTP id <20050823125720.OOGI1233.maxwell6.pacific.net.sg@[192.168.0.107]>; Tue, 23 Aug 2005 20:57:20 +0800 Message-ID: <430B1D2E.8060603@pacific.net.sg> Date: Tue, 23 Aug 2005 20:57:18 +0800 From: Erich Dollansky Organization: oceanare pte ltd User-Agent: Mozilla Thunderbird 1.0.6 (X11/20050802) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Daniel O'Connor References: <200508221720.j7MHKpNb022773@peedub.jennejohn.org> <430B11B0.20702@pacific.net.sg> <200508232155.02444.doconnor@gsoft.com.au> In-Reply-To: <200508232155.02444.doconnor@gsoft.com.au> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Gary Jennejohn , freebsd-hackers@freebsd.org Subject: Re: IBM Active Protection System Approach X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Aug 2005 12:57:23 -0000 Hi, Daniel O'Connor wrote: > On Tuesday 23 August 2005 21:38, Erich Dollansky wrote: > >>The sensor will notice already the start of the move. The notebook will >>then normally be accalerated with 1G as it simply goes into a free fall. >> >>If the heads are then moved away from the disks and the notebook hits >>some ms later ground, it does not matter any more if this event takes >>micro- or milliseconds as the heads are already out of the danger zone. > > > mmm.. There is a static 1G force on the laptop while it is on your desk. When > it falls it goes to 0G as it is in free fall. > Do not mix up acceleration and the force which leads to it. Erich