A simple but effective device for demonstrating the symmetrical nature of plane surface reflection. It consists of a tinted Perspex screen; 150 x 100mm; provided with side supports. If the mirror is placed on a sheet of paper with an object in front of it; the reflected virtual image is seen in the usual way. However; unlike a normal mirror; the transparent perspex permits real objects in the area apparently occupied by the image to be seen also. It is therefore possible to make accurate measurements on; or trace around the virtual image and thus demonstrate the symmetry that exists.
- Dimensions: 150mm x 100mm