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Mirror: To place the mirror, click at the point above the central axis where you want the top of the object to appear. The new mirror is centered on the central axis. The mirror reflects all incident light on the blue side and absorbs all light on the black side. When the Select button is pressed, you can move and resize the mirror. You can also change the focal length of the mirror by click-and-dragging on the hotspots indicated below. Another way to set the
focal length is to choose a value in
the mirror's Properties
Box. The Properties Box
also lets you select the curvature of the mirror.
You can make it convex (default),
concave, or flat. You can also choose
to display the mirror's
focus (it appears as an X on the
central axis) or model the mirror as an ideal
mirror. |
