Bakterien als Künstler - Damen

Creative Microorganisms

A narrow aquarium is filled with sediment from an old pond. In its various layers and under different aerobic and anaerobic conditions, an ecosystem develops with colonies of cyanobacteria, sulfur bacteria, purple bacteria, and other colorful microorganisms (based on the Winogradsky column principle).

Location: 1st floor, staircase 2 (rear staircase)

Bakterien als Künstler Damen
thema-Links

Animals, plants, habitats

Biology

Characteristics of life

Experiment-Links
Bacteriopolis Main

Bacteriopolis

Make a home for a colorful community of microorganisms. This endlessly fascinating living artwork reveals the colorful microorganisms living in the mud and…

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11798 Detail II

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…

10006 Detail

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…

10297 Haupt

After Image

Seeing the void. A powerful flash of light triggers a photochemical process on our retina. This process lasts longer than the brief light flash that…

11747 Detail

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…

11762 Detail

Ambiguous Figures

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

11940 Haupt

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…

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Bakterien als Künstler - Herren

Creative Microorganisms A narrow aquarium is filled with sediment from an old pond. In its various layers and under different aerobic and anaerobic…

10037 Haupt

Banana

If you place a blue filter exactly on the yellow banana, the banana appears green - logical, isn't it? A larger blue filter that also covers the white…

10301 Haupt

Benham's Disc

Benham’s disks: seeing colors where there are none. The disks display patterns with black and white shapes. When these disks rotate, we perceive colors. When…

10046 Detail

Blind Spot

Wasn’t there an orange? Stare at the apple with one eye and slowly bring it closer to your face. At a certain distance, the orange beside the apple seems to…

10049 Detail

Blood Vessels of the Eye

Recognizing what we normally never see. In front of (not behind) the retina of our eye, there is a network of blood vessels. We don’t see it. Our brain…

11269 Schnell gefangen Haupt

Caught quickly

React quickly and catch the sticks! Measure your reaction time on two falling sticks: Catch them as soon as they fall. The markings show you your reaction…

11763 11813 Detail I

Changing Sides

A wire cube rotates in front of a mirror. If you squint one eye and fix a front corner of the wire cube, you see a certain direction of rotation. If you now…

11559 Haupt

Circular Deformations

Patterns come to life. Ovals form around stationary circles. Funnels emerge, cones rise. Curved lines perform a serpentine dance. Images that, when observed…

10231 Haupt

Circular Deformations

Geometric shapes come to life. What we think we see in the shapes of spinning discs! Ovals wrapping around stationary circles. Cones wobbling in a…

11749 Detail II

Coarse or Fine

Texture and perception. One hand strokes coarse sandpaper. The other hand strokes fine sandpaper. Then both hands simultaneously stroke sandpaper with medium…

11809 Detail

Cold Test

Four degrees – only relatively cold. Touch the metal rods, please. Yes, they’re really cold. Almost painful. How painful is this brief contact? This…

10125 Haupt

Color Contrast

How blue blue can be. Two color squares, one lighter, one darker. Are we sure? As different as we perceive them, they actually share the same color. We…

10128 Detail

Colour Reversal

A red tree turns entirely green. Why does the tree change its color? If we fix our gaze on an image long enough, the color receptors (cones) in our eyes lose…

10124 Haupt

Coloured Shadows

Three lights for shadows in six colors. Red. Green. Blue. Three lamps illuminate the white background. On it, we see six shadows of different colors: a…

10050 Detail

Corpuscles of the Eye

Checking the pulse! Red blood cells absorb blue light particularly well. When we look into a blue light source, we see pulsating dots. A whole network of…

11744 Phänomen I

Crooked Tiles

Cafe Wall Illusion: the tile deception. These parallel lines really seem tilted! The black and white squares can be arranged in stripes or offset into a…

Würfel im Spiegel

Cube in a Mirror

Move this wire-skeleton cube towards and away from the mirror: when does its mirror image appear biggest?

11812 Haupt

Delayed Viewing

Acting and seeing with a time delay. Catching fish with a fishing line: normally, it’s simple enough, as the magnet on the line is easy to guide. But it gets…