The gradient of a (scalar) field is a vector field. Suppose you have a scalar field, such as a temperature field . Then you can form a vector field called the gradient of phi.
So it is not the derivative but it is deeply related
The gradient of a (scalar) field is a vector field. Suppose you have a scalar field, such as a temperature field . Then you can form a vector field called the gradient of phi.
So it is not the derivative but it is deeply related