Path: utzoo!mnetor!tmsoft!torsqnt!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!lll-winken!elroy.jpl.nasa.gov!usc!wuarchive!mit-eddie!bloom-beacon!eru!hagbard!sunic!ugle.unit.no!nuug!ulrik!math.uio.no!espen From: espen@math.uio.no (Espen J. Vestre) Newsgroups: comp.sys.mac.hardware Subject: Re: Leaving Mac On Message-ID: <1991Feb14.100805.9865@ulrik.uio.no> Date: 14 Feb 91 10:08:05 GMT Sender: root@ulrik.uio.no (Mr Root) Organization: Department of Mathematics, Univ. of Oslo Lines: 27 References:<801@sousa.enet.dec.com> <1991Feb13.034522.6718@m.cs.uiuc.edu> In article <1991Feb13.034522.6718@m.cs.uiuc.edu> gillies@m.cs.uiuc.edu (Don Gillies) writes: > Let's put this in perspective. Leaving a 60-watt bulb on for a (? day > ? or was it an hour) generates 5 lbs of CO2 at the power plant. If > you believe in the greenhouse effect, turn it off please. > -- At this time of the year, that just doesn't matter (It's still winter in Illinois, I assume?). Almost all the energy that a light bulb or a mac consumes, is turned into heat. So what really matters is what temperature you keep in your office/home. If the temperature is low enough (most people keep it too high in winter), it doesn't matter what way you generate the heating (provided of course, that you don't have a local heating system that is more environment-friendly than your local power plant). Btw, I once heard of a Xerox Lisp Machine (> 500 Watts) that was used to heat a cold office during the winter :-) ----------------------------------------- Espen J. Vestre Department of Mathematics University of Oslo P.o. Box 1053 Blindern N-0316 OSLO 3 NORWAY espen@math.uio.no -----------------------------------------