Return-Path: Received: from mtain-ma03.r1000.mx.aol.com (mtain-ma03.r1000.mx.aol.com [172.29.96.11]) by air-mb03.mail.aol.com (v129.4) with ESMTP id MAILINMB033-a21e4c0521923a2; Tue, 01 Jun 2010 11:04:50 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-ma03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5AD62380000D6; Tue, 1 Jun 2010 11:04:49 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OJT0C-00077G-0E for rs_out_1@blacksheep.org; Tue, 01 Jun 2010 16:03:36 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OJT0B-000777-K3 for rsgb_lf_group@blacksheep.org; Tue, 01 Jun 2010 16:03:35 +0100 Received: from smtp5.freeserve.com ([193.252.22.151] helo=smtp6.freeserve.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OJT08-0001ni-NH for rsgb_lf_group@blacksheep.org; Tue, 01 Jun 2010 16:03:35 +0100 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3523.me.freeserve.com (SMTP Server) with ESMTP id A78991C08425 for ; Tue, 1 Jun 2010 17:03:08 +0200 (CEST) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3523.me.freeserve.com (SMTP Server) with ESMTP id 8D1961C0865B for ; Tue, 1 Jun 2010 17:03:08 +0200 (CEST) Received: from [192.168.1.75] (unknown [95.144.96.138]) by mwinf3523.me.freeserve.com (SMTP Server) with ESMTP id EEC111C08425 for ; Tue, 1 Jun 2010 17:03:07 +0200 (CEST) X-ME-UUID: 20100601150307978.EEC111C08425@mwinf3523.me.freeserve.com Message-ID: <4C05212A.4000809@junkshifta.co.uk> Date: Tue, 01 Jun 2010 16:03:06 +0100 From: Simon Newhouse User-Agent: Thunderbird 2.0.0.18 (X11/20081105) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4C0505F3.23023.3198CFC@mike.dennison.ntlworld.com>,<1OJR3q-0nK4tk0@fwd09.t-online.de> <81893174-4350-4FE1-8D70-4FF4EBB44BCE@leeds.ac.uk> <13C79C2C1C7C41FB801BC4911C404C52@Hugh> In-Reply-To: <13C79C2C1C7C41FB801BC4911C404C52@Hugh> X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: QRO / QRP Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039ac1d600b4c0521910ce0 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) E=hv E=energy of the photon v=frequency h=planks constant Very very small is the answer and smaller at lower frequencies. Hugh_m0wye wrote: > Chris and group, > What an intriguing thought - building a village inside a photon. > It reminded me about the article on Toroidal Antennas that Jim M0BMU > drrew our attention to on 1st March. It contained diagrams showing the > phase-closed-loops which constitute photons. > Since fractional photons don't exist, I assume there is a minimum > power level below which nothing is radiated - in other words there is > a lower level of QRP which cannot be received by ANY receiver, no > matter how well endowed with antennas and low noise amplifiers - > simply because it is less than 1 photon. > I wonder how small it is ? > 73 > Hugh M0WYE > > > > ----- Original Message ----- From: "Chris Trayner" > > To: > Sent: Tuesday, June 01, 2010 2:35 PM > Subject: Re: LF: QRO / QRP > > > Hi Rik, > >> interesting approach that QRP not only includes power (input, output, >> ERP ...) but also dimensions. > > We meet something like that at work, where there are THz researchers > as well as those of us interested in (V)LF. > > They look down their noses at it if there aren't twelve zeroes in the > frequency; > we look down our noses at it if you can't build a small village inside > a photon. > > 73, > Chris G4OKW > > ----------------------- > Dr Chris Trayner > School of Electronic & Electrical Engineering, > The University of Leeds, > Leeds LS2 9JT, United Kingdom > Tel: +44 113 34 32053 > Fax: +44 113 34 32032 > > > > > >