Biology

Electricity

Electricity and magnetism

Human body

Magnitudes and Measuring

Mathematics

Physics

"Delta Phi"

by Joachim Sauter The chrome-plated surface of the exhibit resembles a strongly moving water surface. Illuminated from above with a torch, the incoming light…

2x2 Puzzle

Four cubes fit together in the box. Each cube has 4 quarter-pictures, one on each of 4 faces. The other two faces are transparent, BUT they look onto the…

3D-Shadows

Shadows gain depth. Illuminated with red and green light, a tetrahedron casts a red and a green shadow on the screen. Viewed through glasses with red and…

847 Compass needles

There are 847 compass needles attached to a disc. Because they are so close together, they influence each other. With a magnet, the compass needles can be made…

A riddle for intelligent and patient people

Puzzles for the astute and the patient. Of the eleven puzzles with strings, boards and rings, however, one cannot be solved. But which one?

A Slice of Turbulence

by Ned Kahn If the crest of the wave collapsed over the surfer off Hawaii and he could bring home a slice of salami from it, he would have the original to the…

A Table with loose Legs

How many supports does it take to stabilise a tabletop without the aid of screws or glue? The astute (but also the experimental) will find that three supports…

Additive Color Mixing

Mixing light colors. Play with red, green, and blue light, and with their brightness. When overlapped and adjusted optimally, red, green, and blue produce…

Adhesive Air

Coandă Effect: How shape, position, and surface influence airflow. The Coandă effect occurs when fluid or gas jets deviate from their original flow direction…

Aeolian Landscape

by Ned Kahn Alongside water and ice, wind is the shaping element of the natural landscape. This exhibit allows for the pleasurable "terraforming" of gently…

After Image

Not seeing nothing, but seeing nothing! A strong flash of light triggers a photochemical process on our retina. However, this process lasts longer than the…

Air Bubbles

A pump can be used to force air into a water-filled glass tube. However, not all air bubbles rise vertically. Some do, others choose more of a zigzag or spiral…

Air cushion

Inventive talent is called for here! Use scissors and tape to build objects out of paper that float on the wide air cushion. While testing and optimising, you…

Air Fountain

Dance with scarves. They rise and fall. Colorful scarves, moved by the airflow as if by an invisible hand. Choreography: visitors on the platform. by Daniel…

Air lift

The vacuum makes the difference. When the ball moves up the tube, the airflow is directed in such a way that a vacuum is created. How must it be directed for…

Air Mirror

Sit comfortably and check the stripy view at the end of the road. Now heat up the road. (A solid steel plate rapidly heats to 100°, warming the dark sand of…

Alike and unalike

The illusion of inequality. Two identical wooden arcs lie side by side. The inner one appears larger, but it isn’t. For circular arcs, the outer edge is…

All Triangels are the same

Using different triangular shapes, congruent shadows are to be cast on a pattern wall with equilateral triangles.

Ambiguous Figures

Clearly ambiguous. One object, two forms: “Necker cubes” belong to the category of ambiguously perceivable objects. Perceiving spatial dimensions and depth:…

Anamorphic Images: Cone

On a flat surface the images are distorted beyond recognition – a peculiar visual code requiring a special key. Slip the square sheets over the reflective…

Anamorphic Images: Cylinder

On a flat surface, the images are distorted beyond recognition - a special visual code needs a special key. Put the square panels over the reflective cylinder:…

Angled Mirrors

With two mirrors that can be brought to different angles to each other around an axis, polygons (so-called polygons) can be made in a simple way. At very…

Anti Gravity Mirror

Half a person becomes whole. Reflect the right half of the body, and there you have it: a complete person. It’s fascinating to watch them move. Can you manage…

Ants

Observe the bustling activity of ants as they move through a large enclosure performing various tasks. This is made of transparent material so that visitors…