Notices
Results 1 to 3 of 3

Thread: thermodynamics .. when work being negative or positive

  1. #1 thermodynamics .. when work being negative or positive 
    New Member
    Join Date
    Oct 2013
    Posts
    1
    thermodynamics .. when work being negative or positive


    Reply With Quote  
     

  2.  
     

  3. #2  
    Brassica oleracea Strange's Avatar
    Join Date
    Oct 2011
    Location
    喫茶店
    Posts
    17,036
    You probably need to say which definition of work you are using. But I think, in general, a positive value of work means that energy is lost from the system and negative work means energy is gained by the system.


    ei incumbit probatio qui dicit, non qui negat
    Reply With Quote  
     

  4. #3  
    Forum Isotope
    Join Date
    Feb 2012
    Location
    Western US
    Posts
    2,896
    Quote Originally Posted by wanted90 View Post
    thermodynamics .. when work being negative or positive
    As strange suggests, there's no universally correct choice; it's a matter of definition and convention. Just as there's no inherently correct choice of "left" or "right," so it is with the sign of work. Step 1 is to come up with an agreed-upon definition, and then the sign follows therefrom. When communicating the information to another party, you'll need to convey both the sign and the definition to avoid misunderstanding.
    Reply With Quote  
     

Similar Threads

  1. History: Positive & Negative electric charge?
    By scoobydoo1 in forum Physics
    Replies: 1
    Last Post: May 5th, 2013, 10:36 PM
  2. is there any negative or positive zero?
    By precious in forum Mathematics
    Replies: 16
    Last Post: November 16th, 2011, 04:44 AM
  3. focal point, negative or positive?
    By icu in forum Physics
    Replies: 7
    Last Post: May 11th, 2009, 03:19 PM
  4. Galileo's trial-positive or negative impact?
    By kingwinner in forum Physics
    Replies: 1
    Last Post: June 11th, 2007, 08:43 PM
  5. Negative and Positive thoughts
    By deep'n'dark in forum Behavior and Psychology
    Replies: 11
    Last Post: January 10th, 2007, 04:16 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •