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…
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…
Ambiguous Figures
Clearly ambiguous. One object, two forms: “Necker cubes” belong to the category of ambiguously perceivable objects. Perceiving spatial dimensions and depth:…
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…
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…
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…
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…
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…
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…
Depth Enhancer
This exhibit is not accessible during the winter months. When you look at your surroundings through the depth enhancer, they seem quite unfamiliar. The depth…
Dialog in the Vase
Vase with two faces. At some point, the image flips: first, it’s a vase. It rotates. Wait! There are two faces. Two people talking to each other. Two…
Disappearing Glass Rods
Brought before your eyes: Optical density. Similar to how a drinking straw appears bent in a glass – here is another way to illustrate the phenomenon of…
Distorted Room (Ames Room)
Little one grows tall. An absolutely ordinary room, at least when viewed through the peephole. But wait, the little brother grows taller than the big sister…
Escher’s endless Staircase
Ascending downwards. Luckily, this infinite staircase doesn’t exist in our world. It leads upwards endlessly, without ever reaching a top. Similarly, its path…
Floating Rings
Magical: Three rings floating in perfect balance. That they appear to balance like spinning coins is an illusion. The rings are firmly connected to one…
Floating Tap
This exhibit is not accessible during the winter months. If this tap were not in the Technorama Park, it would probably have come from the land of milk and…
Hermann Grid and Scintillating Grid with Variants
A static image that flickers. Viewed from a certain distance, with a steady gaze, these images flicker. They scintillate. The Hermann grid seen up close: at…
Hollow Head
Only has eyes for you. One step to the left, three to the right, stretch upward a little, bend down: there’s no escape. Those eyes follow you…
Impossible Nuts
A perfectly straight pencil that wiggles. When the brain resists what the eye sees: it seems impossible for the pencil to move through the two nuts in such a…
Inclined Chess
Big and bulky for some – small and slim for others. A completely messed-up chess set, right? Agreed? Almost. The chessboard is perfectly level. The pieces…
Light Deformation
"Successioni luminose" – physics turned upside down. Light deforms metal: physical laws are seemingly – and visibly – turned on their head here. A white…
Make two into one
A new look at familiar faces. Three of you are sitting at a table. One person is looking into two mirrors. With the right eye, they see the person sitting to…
Pinna illusion
Perceiving movement in a static image. Two concentric circles are made up of tilted rectangles, rotated in opposite directions. When approaching or stepping…
Pulfrich Phenomena
This pendulum circles. Through the optics, this pendulum swings in an elliptical path. With a gray filter in front of the other eye, its direction changes.…
Real-Virtual, Virtual-Real
Image and/or reflection. In a bulging glass vessel illuminated from below, a small object hangs. Or are there two? The glass body behaves like a concave…
Reversed Perspective
Art gallery reveals contradictions. This three-dimensional spatial sculpture completely overturns our visual habits. It flips the space by presenting elements…
Shake Hands with Yourself
The concave mirror is shiny black: a red ball dangles invitingly, brightly lit. Set the ball swinging, then slowly reach to catch it. Your mirror-image hand…
Squaring the Circle
Everything always has two sides. From one side, it looks like a square; from the other, a circle. It’s all a matter of viewpoint and perspective. The…
Squirming Palm
Rotating pattern and its afterimage. Stare at the rotating dot pattern for a while, then look at the palm of your hand: it now seems to rotate too – but in…
Three Chairs
A different perspective: spatial perception. Looking through the peephole reveals three chairs. Only one is built as we would expect. A side view into the…
Three-dimensional Projection
3D – the cinema is made by the brain. From red and green shadows, plastic, three-dimensional objects emerge. Viewed through glasses with red and green…
Touch the Spring!
Or maybe not? It appears incredibly real: a three-dimensional image – here a feather – reflected by a spherical mirror. Impossible to touch.
Touching the Knife (or not)
Ouch! A Swiss army knife floats freely in the air. Appearance and reality: no one gets cut by this knife. Reaching for it ends in thin air. What we see is…
Turning Shadow
Playing with the Pulfrich effect: perceiving a two-dimensional image as three-dimensional. Through the Pulfrich glasses, the shadow of the cube gains depth.…
Waterfall Effect (Rotating Spirals)
Vision happens primarily in the brain. Spiral patterns seem to fold in and out as this disc rotates. If we focus on a stationary object, it suddenly appears…
Illusory motion, its direction, and afterimages. As the disc spins, the spiral patterns seem to turn inside out. Then, after focusing on the patterns for a…
Wheel of Life
Does our brain work like a film camera? Similar to a flipbook, an endless film plays here. The twelve tiny light dots are the main actors. Despite this sparse…
«Poppier»
When walls wobble. Reversed perspective: it turns our visual habits upside down. The three-dimensional sculptural painting “Poppier” practically flips spaces…
Ambiguous Cube
Strange things can happen when your brain gets confused. Some objects or figures are “ambiguous,” providing visual input that your brain can interpret in more…
Anti-Gravity Mirror
Learn how to fly with this neat mirror trick. A reflection of your right side can appear to be your left side. Try this activity and you'll appear to perform…
Benham's Disk
A rotating black-and-white disk produces the illusion of color. Rotate this black-and-white pattern at the right speed, and the pattern appears to contain…
Blind Spot
To see or not to see. The eye’s retina receives and reacts to incoming light and sends signals to the brain, allowing you to see. One part of the retina,…
Color Contrast
A colored object may look different against different-colored backgrounds. In this investigation, you'll discover how colors seem to change when you place them…
Hole In Your Hand
What happened to your whole hand? You have two eyes, yet you see only one image of your environment. If your eyes receive conflicting information, what does…
Aus Rot und Grün wird ....) Farbmischung mit Kreiseln - inklusiv
bunte Papierscheiben tanzen. Plötzlich sehen wir Farben, die vorher gar nicht da waren. Wie kommt das? Und können wir mit nur drei Farben unsere…
Red and green make …? - colour mixing with spinning tops
Mixing colours differently: We build spinning tops and let colourful paper discs dance. Suddenly we see colours that weren't there before. How is that…
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