# Grad, curl , div operator got any meaning?

1. May 22, 2013

### Outrageous

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. May 22, 2013

### Integral

Staff Emeritus
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.

3. May 22, 2013

### MisterX

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".