Commonly used vector formulas for electromagnetic field interpretation Why does this formula have both A gradient and A divergence? I think only scalar can find gradient, only vector can find divergence. So why can this A be found?

This formula actually defines how the Laplace operator acts on a vector, which is the right-most expression. You think that only a scalar can find the gradient, only a vector can find the divergence, which is correct, but don't forget that the gradient is a vector, and the divergence is a scalar. For example, the expression on the right of the equal sign,...

This formula actually defines how the Laplacian operator acts on a vector, which is the rightmost expression. You think that only a scalar can find the gradient, only a vector can find the divergence, which is correct, but don't forget that the gradient is a vector, the divergence is a scalar. For example, the expression on the right of the equal sign,...

What are the main advantages of online market research over traditional market research methods

Which traditional cultural characteristics are reflected in The Tomb of the Three Kings? What is the artistic characteristic?

Which set of physical quantities follows the parallelogram rule () A. Displacement, velocity, acceleration, force B. Displacement, length, speed, current C. Force, displacement, distance, acceleration D. Speed, acceleration, force, distance

A. Displacement, velocity, acceleration and force are all vectors, and they follow the parallelogram rule during operation. Therefore, A is correct. B. Displacement and velocity are vectors, and they follow the parallelogram rule during operation. Length and current are scalar, and they follow the algebraic addition and subtraction rule during operation. Therefore, B is wrong. C. Force, displacement and acceleration are all vectors, and...

The following physical quantities do not need to follow the parallelogram rule in operation: a time b displacement c velocity d acceleration

Time

Coordinate Representation of Normal Vector

The expression of normal vector coordinate is the same as that of ordinary vector:(x, y, z) If the form is high school mathematics, then the normal vector must only involve the normal vector of the plane, and the solution is: try the vector to be (x, y, z), then take any two vectors in the plane, and then respectively make the quantity product of these two vectors and the normal vector (x, y, z) be...

If (x, y, z) is a form of high school mathematics, then the normal vector must only involve the normal vector of the plane.

Commonly used vector formulas for electromagnetic field interpretation Why does this formula have both A gradient and A divergence? I think only scalar can find gradient, only vector can find divergence. So why can this A be found?