XPost: sci.space.policy, sci.physics   
   From: jfindley@cinci.nospam.rr.com   
      
   In article , invalid@invalid.com says...   
   >   
   > On 10/12/2016 7:13 PM, Fred J. McCall wrote:   
   > > Serigo  wrote:   
   > >   
   > >> On 10/12/2016 4:14 PM, Fred J. McCall wrote:   
   > >>> Serigo  wrote:   
   > >>>   
   > >>>>   
   > >>>> there may not be any coal or oil on Mars if no huge plants growing in   
   > >>>> its past like on earth. "=> no fuel on Mars"   
   > >>>>   
   > >>>   
   > >>> True, but your typical space colony won't be burning coal.  Methane is   
   > >>> easily produced.   
   > >>>   
   > >>   
   > >> 1 how much methane does it take to generate 1 watt hour ?   
   > >>   
   > >   
   > > A little over 3 cubic feet.  Why does it matter?  You can produce as   
   > > much as you need.   
   >   
   > wrong, you are unfamiliar with sizing a problem, determining the bounds   
   > or limits.   
   >   
   > If you?re looking for a rough estimate rather than an entirely accurate   
   > one; a hundred cubic foot of gas is between 2 and 3 kWh, depending upon   
   > the conversion factors which are used.   
   >   
   >   
   > >   
   > >>   
   > >> 2 how many watt hours does your computer take ? (assume you use it for 1   
   > >> hour)   
   > >>   
   > >   
   > > Who the fuck knows or cares?   
   >   
   > look at your power supply, or turn over your computer, it is on the   
   > label, know how to read ?   
      
   My Raspberry Pi 3 single board computers (quad core ARM running at 1   
   gigahertz) that I use to run Linux and "set top box" software each have   
   a 5 volt 1 Amp power supply, so 5 watts.  Where will we get the power to   
   run our (energy efficient) computers?   
      
   Jeff   
   --   
   All opinions posted by me on Usenet News are mine, and mine alone.   
   These posts do not reflect the opinions of my family, friends,   
   employer, or any organization that I am a member of.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)