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Thread: Fringing force

  1. #1 Fringing force 
    Forum Freshman Robinol's Avatar
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    Recently i came to know about this force. This force pulls any dielectric body between 2 plates of a capacitor. But still i can't understand why this happens. Can anyone explain?
    I think this can be used to calculate dielectric constants of different materials. Any suggestions?


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  3. #2  
    Forum Bachelors Degree Kerling's Avatar
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    I don't really see the point here. Might I suggest you look it up in a textbook about electromagnetics? And Crap, Somebody took my Jackson!
    Anyways, it has to do with the fact that its lowest energy-state is within a capacitor (or out) And sure it can be used. Be smart, and think of something simple


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  4. #3  
    Forum Bachelors Degree Kerling's Avatar
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    Ow no, it fell behind my book shelf. Man that is dusty. But Griffiths should do nicely. I would however suggest a smart system see if you can get a linear result. And that isn't going to work with textbook set-ups.
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  5. #4  
    Forum Freshman Robinol's Avatar
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    Thanks for replying Kerling. But i did'nt get the lowest energy-state concept. Are you refering to Potential energy?
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  6. #5  
    Forum Bachelors Degree Kerling's Avatar
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    The lowest energy state is basically that the point of equilibrium is when the dielectric can align itself with the direction of the capacitor. You could use the potential in the interaction equation to calculate the lowest energy position.
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  7. #6  
    Forum Freshman Robinol's Avatar
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    Quote Originally Posted by Kerling View Post
    The lowest energy state is basically that the point of equilibrium is when the dielectric can align itself with the direction of the capacitor. You could use the potential in the interaction equation to calculate the lowest energy position.
    OK
    Thanks again
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