|
Shine sunlight on this apparently blank metal mirror, and the Chinese Signs of the Zodiac will appear! |
| | A very special photographic paper from the early days of photography. |
| | A three-sided mirror kaleidoscope with a fivefold symmetry axis |
|
| Transmit sound from your phone on a light beam! |
| | This cardboard construction kit allows you to build your own camera obscura. |
| | These glasses have built in prisms, which bend the light path by 90 degrees. So instead of looking ahead, you are looking down! |
|
| A working television, based on John Logie Baird's original - the only mechanical TV in regular production. |
| | |
