Boyo

Reaching High. Pull the rope with the handle firmly downward – immediately, the flywheel pulls the rope and handle back up. It works like a yo-yo, but in…

Captured Cloud

Swirling Fog. Step into the cloud. It’s pleasantly cool inside. Will you find your way out? In the two half-shells, nozzles spray fine water droplets. It's…

Depth Enhancer

Perceiving distances differently. The Tiefenverstärker (depth amplifier) artificially increases the distance between our eyes—from an average of 65 mm (in…

Digital Sundial

"Digital" sundial. It casts no shadow. Instead, it displays the time using illuminated numbers—without any electronics. A combination of aesthetics and…

Distant receiver

Big Ear. If the listening horn is well aligned, birds can be heard chirping even from far away. The large dish collects and focuses sound waves, amplifying…

Droplet Fountain

Wave patterns. A single drop falls. In the fountain, a wave pattern appears. How does it develop towards the edge? A strike on the button at the edge…

Echo Pipe

Hello?! Shouting, calling, whistling, clapping – this tube answers. The returned sound is quite different from the original noise. How long does it take for…

Falling Water

Splash! From the cube of the Wonder Bridge, five tons of water plunge into the void. Part of the water is propelled through a halfpipe, soaring well beyond…

Floating Tap

And where does the water come from? As if by magic, the faucet floats in mid-air. Water flows continuously, without stopping. A miracle, no doubt. But can it…

Fountain of Instability

Spitting Snake. Water sprays out in the middle of the pond. The hose moves in a snake-like motion. The end of the hose sways slowly, almost like a pendulum.…

Get the wrong end of the stick?

Levers in Action. Can one person lift three others? On this seesaw, the lever works in your favor. Even if the others are much heavier, the seat plate « on…

Higher and further

Water creates pressure. Water jets spray horizontally from the cylinder at different heights. The lower the nozzle, the higher the water pressure and the…

Human Pointer

The shadow shows Winterthur's local time. The scale on the ground indicates where to stand today. The shadow of the raised arm then shows the True Solar Time…

Jumping Water

Fascinating Water Arches. Is solid water flying through the air? Beautiful: sometimes, continuous arches form, almost like tent poles, but made of water.…

Moonwalk

Reduced Gravity. What does it feel like to jump on the Moon? Try it here! A small effort is enough for a big leap. Here, gravity is reduced to one-sixth,…

Musical Cloudburst

Dry Shower. What’s hitting the umbrella? It’s music! The intensity of the water jet determines the note. The umbrella acts as a loudspeaker. ❄️ Technorama…

Obstinate Swing

Let it swing. One person sits still, while one or two others start swinging. Soon, the seated person begins to oscillate as well. These swings, connected by…

Red Explorers

Look closely. What are the explorers observing? Scattered throughout the park, they fix their gaze on something intriguing – or a detail easily…

Rockspinner

Strong Like Obelix! This "menhir" weighs five tons – yet you can move it effortlessly. The secret? The rod is perfectly mounted inside the stone, allowing it…

Rotating Pendulum

Standing Wave. An impulse triggered by the handwheel travels as a wave motion up the rotating wheel and back down. By periodically moving the wheel back and…

Seesaw pump

Fill and empty the caterpillar. This only works if the team of three is perfectly in sync: fill the hose with water from the pond, pass the water along, and…

Shadow Fence

Sun Pixels. At first glance, just a metal plate with holes. But depending on its orientation, an image or message emerges. What these “sun pixels” display…

Shepherd’s Sundial

North? Not relevant. A simple sundial, like those used by shepherds for centuries. The advantage of this clock is that knowing the north direction is…

Sky Window

Perfectly Round Oval. A hole in the landscape. It reflects the sky. From a distance, this mirror appears to be perfectly circular. But upon closer…

Sonnenfänger

Visible eruptions. What’s happening on the Sun? The solar tracker reveals it as sunspots. Weak and strong eruptions that influence Earth’s magnetic field as…

Spider Sundial

Swiss Timing with Swiss flag. The drawing on the ground looks like a spider’s web, but it accurately shows the time for each date of the year. The advantage…

Suspension Bridge

Vibration Patterns. Experience resonance frequency: Walking across the suspension bridge sets it into oscillation. Depending on your movement, these…

Tit for tat

Coriolis Effect. The water jets on this carousel are aimed toward the center. Once set in motion, they change direction. The Coriolis effect becomes visible…

Triad - metal, stone, wood

This is music! Comparing the sounds of different materials: this is how stone, metal, and wood resonate. The material, its length, volume, and the strength…

Tricky target well

Teamwork. Place a finger on the nozzle of the water jet, and a nearby nozzle’s jet will shoot even farther. Maybe. But maybe not. Which combination will…

Water film

Clinging Water. A daily phenomenon displayed in its most beautiful form: why doesn’t the water simply drip off the silver mushroom? Molecular interactions…

Water Music

Jam session "Splash Sounds". Experiment with water, improvise with surfaces and pipes, conduct an entire water orchestra: these compositions bear your…

Water Vortex

Spiral wave motion. The vortex resembles the one in a bathtub as water drains. However, the wave that forms within it is less familiar – making the image even…

Whisper Route

Amplifying Sound. Clearly understandable, even from forty meters away, what your conversation partner is saying. Receiving/Listening: One of the satellite…

Wild water wheel

Clinging Molecules. Depending on the speed of rotation, the drum carries different amounts of water up along its wall. The turbulent water wheel demonstrates…

Wind Machine

Breeze, storm, hurricane. From a gentle breeze to a raging storm: play with the wind. Reduce your surface area or expose as much of it as possible to the…