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Grad, curl , div operator got any meaning?

  1. May 22, 2013 #1
    grad, curl , div operator got any meaning??

    ∇x F (t) same as the first derivative of F with respect to t , or will get the gradient of F which is normal to the F ?
    ∇ dot F (t) , will get the scalar value of what??
    lets say F is force , then can anyone please give me the meaning of those operator on the vector mean?
    ∇x F (t) will get the gradient of F which is normal to the F .
    I think of this because in the stoke's theorem the ∇x F (t) have to dot with n , where n should be the unit normal vector of the surface.
    I am blur , please guide .
    Thank you.
     
  2. jcsd
  3. May 22, 2013 #2

    Integral

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    First check the definition of Del as given in wiki.

    Note that it is defined as the differential with respect to spacial coordinates, not time.
     
  4. May 22, 2013 #3
    Your use of the word "normal" is not correct. F is a vector field, not a surface. Perhaps you meant orthogonal instead of "normal".

    ∇x F is not the "the gradient of F which is normal to the F".
     
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