Generally, the Human feels great pleasure in colors. The eye requires them, as it needs the light.
Johann Wolfgang von Goethe
Our vision system tries to get the real colour of subjects autonomous, while calculating the lighting colour off- like the white balance of a camera. With more than one lighting colour our vision system is overstrained. Here white and green light is directed on a white area. When you are holding your hand some centimetres over the area, it casts two shadows- from each lamp one. In a more amazing way appears a violet shadow there, where the light of the green lamp is shielded, but the white lamp is shining! The combination of the lamps blue and white gives a yellow shadow.
Here comes a funny optical module, which you absolutely have to hold in different amounts, so the youngest have their fun too! If you stay really close to the mirror, you can see your face clearly bigger. When you remove yourself slowly, the image on the mirror gets bigger and bigger, till the picture turns over: the mirror image of your face is upside down with increasing distance smaller.
On all of the three sides of a narrow pillar are in each case three triple mirrors in different orientations. Like the “cat eye”- reflector they shade the incoming light in the same direction back, so you can see yourself in the middle of the triple mirror- independent from where you are looking into it.
A concave mirror creates enlarged, virtual pictures. A cylinder glass shows this effect just in one direction: the image is contorted in the horizontal direction, that means the height stays the same, but because of the extreme curvature changes the breadth. On the back is an arched mirror with the same curvature and size. Here you can watch the reversed effects.
This first inconspicuous seeming exhibit moves you into its spell after the first perspective. You look through one of the openings in a sheer endless mirror walk and will be amazed about the numbers of your own mirror image. And: when you move the opening plate slightly there is movement in the game!
Do just special letters are turned? On the upper area lays a movable plate with several words in black and coloured letters. When the plate is moved from one side to another and the text is watched through the cylinder, the black words are readable, but the coloured are upside down. Which role plays the colourfulness?
A simple mirror apparent interchanges left and right, the view is “back- to front”. Two mirrors, which stay in a right angle to each other, reflect the mirror image again: so, it appears right. You can yourself like the person who stands towards you. But what happens, when the side correct mirror is turned?