# Math Insight

### Applet: Expanding three-dimensional vector field

This vector field is expanding outward from the origin. Only the positive octant with $x>0$, $y>0$, and $z>-0$ is shown. You can rotate the graph with the mouse to give perspective. The vector field is $\dlvf(x,y,z) = (x,y,z)$.

This applet is found in the pages

List of all applets

#### General information about three.js applets

The applet was made using three.js and requires Javascript as well as a browser that supports WebGL. For most three.js applets, you can drag with the mouse to rotate the view, drag with the right button to pan, and zoom in/out with the mouse wheel. Many applets contain points that you can drag to change values of variables.