- #1

Titan97

Gold Member

- 451

- 18

The gradient of T(x,y,z) gives the direction of maximum increase of T.

The Curl gives information about how much T curls around a given point.

So the equation says "gradient of T at a point P does not Curl around P.

To know about how much T curls around a particular point, I need to know about the direction of T on other points around the required point.