A study on the convergence of the convex lens on the light with WPS

The effect of the following figure

The use of WPS demonstrates a vivid demonstration of the convex lens's convergent effect on light (Fig. 1).

Figure 1

The production method is as follows:

1, create a new blank slide, click the right mouse button, click the "Grid and Guide" command in the pop-up menu, and select the relevant options in the pop-up dialog box (Figure 2).

Figure 2

2, the shape of a convex lens to draw a slightly flat oval, with two different blue for vertical gradient fill (Figure 3), the line is set to colorless (Figure 4).

Figure 3