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Technology: Water: Battery-power desalination offers hope to parched areas

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      CommentAuthorTrim
    • CommentTimeJul 3rd 2012
     
    Well once you brought some stuff the water is sought of free.
    Well I know I should say 'sort' off free but sought is more appropriate.
    •  
      CommentAuthorAngus
    • CommentTimeJul 3rd 2012
     
    Posted By: enginerd
    Posted By: Trim2.2 kilojoules of free energycouldbe harvested from every litre of fresh water.


    I don't understand the meaning of the word "free" here.


    That's pretty close to the Gibbs Free Energy of a litre of NaCl solution at the concentration of typical seawater.
    • CommentAuthorenginerd
    • CommentTimeJul 3rd 2012
     
    Ahhh, "free".
    •  
      CommentAuthorAngus
    • CommentTimeJul 3rd 2012
     
    Posted By: enginerdAhhh, "free".


    Yup. It's thermodynamically there for the taking, if only you can figure out how.
    •  
      CommentAuthorTrim
    • CommentTimeJul 3rd 2012 edited
     
    And pay for a few bits and bobs.

    And maybe the odd great big concrete structure or two, for the Amazon.
  6.  
    Posted By: enginerd
    Posted By: Trim2.2 kilojoules of free energycouldbe harvested from every litre of fresh water.


    I don't understand the meaning of the word "free" here.

    It means somebody else pays for it.
    •  
      CommentAuthorTrim
    • CommentTimeAug 3rd 2012
     
    •  
      CommentAuthorTrim
    • CommentTimeMar 9th 2013
     
    •  
      CommentAuthorTrim
    • CommentTimeAug 15th 2013
     
    Po

    Plasma-treated nano filters help purify world water supply.

    http://phys.org/news/2013-08-plasma-treated-nano-filters-purify-world.html
  10.  
    So what do you do with the gunked up filters, wash them off in the sink?
    •  
      CommentAuthorTrim
    • CommentTimeAug 15th 2013
     
    No in the river, they haven't got sinks.
  12.  
    bit of spit and polish guv and she'll be good as new
  13.  
    Posted By: TrimNo in the river, they haven't got sinks.
    Sources, but no sinks? Send them Quencos.
    •  
      CommentAuthorTrim
    • CommentTimeAug 15th 2013
     
    Unfortunately you will have to wait a bit for that happy day.
    •  
      CommentAuthorTrim
    • CommentTimeAug 22nd 2013
     
    NW

    New membranes?

    A new process for producing carbon nanomembranes.

    http://www.nanowerk.com/news2/newsid=31893.php
  16.  
    Might lead the way to cheap cloaking metamaterials
    •  
      CommentAuthorTrim
    • CommentTimeAug 22nd 2013
     
    All this malarkey about cloaking, maybe aliens are here but we can't detect them.
  18.  
    Maybe aliens are made of dark matter, and they think we are the aliens.
    •  
      CommentAuthorTrim
    • CommentTimeAug 22nd 2013
     
    Well as we can't have any form of intercourse with them they can bugger off.
    • CommentAuthorjoshs
    • CommentTimeAug 22nd 2013
     
    Posted By: TrimWell as we can't have any form of intercourse with them they can bugger off.
    Is that how you determine how all other life should stay or go? It might in a very disturbing way explain your obsession with kangaroos and people hopping out of cakes.

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