Simulations

Instructions
A simulation will only respond to keyboard control when it is "in focus". If not you can click on the simulation area once to bring it to focus.

Multiple Lenses (All lens types. Including virtual object.)

The intermediate image (the grey circle) formed by the first lens becomes the object of second lens.

Press v to isolate the light rays of each lens. Drag the object or the lens to change its location. A lens can be converted from converging to diverging kind or vice versa by dragging one of the focal point across the lens to the other side. You can zoom in and out by pressing + or - if the image is out of view.

Converging and Diverging Lens

Drag the object to change its location and size. A lens can be converted from converging to diverging kind or vice versa by dragging either one of the focal points across the lens to the other side. You can zoom in and out by pressing + or - if the image is out of view.

Converging and Diverging Mirror

Drag the object to change its location and size. A mirro can be converted from converging to diverging kind or vice versa by dragging the focal point across the mirror to the other side. You can zoom in and out by pressing + or - if the image is out of view.