Collection
Staging space, sight, light, sound and paths: visitor flows, showcase lighting, room acoustics, sound islands, projection mapping and the pavilions of world expos to try out.
Apps
3D exhibition floor plan with visitors following the social force model: a tour with a highlight, a bottleneck with a door and counterflow, and the evacuation of a hall through one exit. The floor shows density in Fruin levels; a fundamental diagram compares measured speed and flow with the Weidmann curve. The list of evacuations shows that pushing creates arches in front of the door and lengthens the evacuation.
Architecture & scenographyTry it
Exhibition room in 3D with a desk or tall showcase, a draggable ceiling spotlight and a visitor. The reflection zone on the ceiling shows from where a spotlight appears as a reflection in the glass; the visitor-view panel shows what the visitor sees. Illuminance E = I·cos θ/d², annual exposure in lx·h and glare are checked live against guidelines after CIE 157.
Architecture & scenographyTry it
An exhibition hall in 3D with two listening stations: materials for floor, ceiling and walls set the reverberation time after Sabine and Eyring and the reverberation radius. The floor map shows where station A is ahead of B or where direct sound outweighs reverberation. Early reflections run as rays via image sources, and an impulse response and a synthetic listening test make the difference audible.
Architecture & scenographyTry it
An exhibition hall in 3D with three listening stations: omni speakers, directional speakers, sound domes and ultrasonic beams set, through directivity and reverberation time, where one station clearly leads and where stations overlap. The floor map shows sound islands, signal-to-noise ratio, level and speech intelligibility (STI); wavefronts and reverberation travel visibly through the hall. “All louder” leaves the map unchanged, directivity and damping create islands; at the visitor’s spot the mix is audible in space.
Architecture & scenographyTry it
A projector shines onto a room corner, a column, a sculpture of blocks or a facade. Four modes, uncorrected, keystone, mapping and illusion, show why keystone correction holds on one plane only, mapping fits every shape and a spatial illusion works only from the sweet spot. A panel shows the image the projector sends; lenses show brightness (cos θ / d²) and stretched pixels.
Architecture & scenographyTry it
Nine world expo buildings from 1851 to 2025 as 3D structures: Crystal Palace, Eiffel Tower, Atomium, Philips Pavilion, Fuller dome, Frei Otto’s cable net, Shigeru Ban’s paper pavilion, Seed Cathedral and the Grand Ring of Osaka. The Structure lens colours every member by compression, tension, bracing or bending; a construction slider shows assembly in modules, ring by ring or the paper-tube grid laid out flat and pushed up. On the site all stand at the same scale, enclosed by the Grand Ring; a timeline compares planned and actual lifetimes.
Architecture & scenographyTry it
An exhibition floor plan that shows on the floor what can be seen from every place and how well it connects to all others. Drag an observer with its view fan, remove walls and send out agents: they walk where integration is high.
Architecture & scenographyTry it
Hundreds of floating shards spread in depth join into a motif from one single viewpoint only: WISSEN, RAUM, a cube or an eye. Alignment rises live as you approach the point; sight lines and folding into one image plane show why an image does not reveal depth. Exhibit-ready.
Architecture & scenographyTry it
Alberti's window in 3D: sight lines from the eye point pierce a glass pane and draw a Renaissance hall line by line as a perspective image. Eye height, sideways position and the distance of the picture plane are adjustable; a rotatable cube shows two vanishing points. Finally the camera moves into the eye point: image and space match exactly, then only the flat panel remains.
ArtTry it
Four illusions that only work from a single viewpoint, as walk-around 3D stations: Ames room (giant and dwarf; the people swap corners), Penrose triangle as a real object with a gap, Beuchet chair and a rotating hollow mask with switchable lighting. A viewpoint slider moves from the peephole to the outside view. True shape, lines of sight and readouts show why the brain picks the most probable interpretation of an ambiguous retinal image.
Perception & IllusionTry it
Two figures in conversation, three film cameras and the line of action as a café scene in 3D. The camera images appear live as a film strip: if a camera stands across the axis, both figures look in the same direction across the cut. With shot sizes, a move across the axis and a neutral shot.
Film & mediaTry it
Compare RGB light with CMY pigments using intensity controls. Discover why combining colours produces different results for light and paint.
School physicsTry it
Tones made visible: a vibrating metal plate (square or circle) arranges scattered sand into delicate eigenmode patterns along the nodal lines. Adjust the frequency, find resonances — finer patterns at higher modes.
Physics experiments (Deutsches Museum)Try it
Three tensegrity structures (prism, icosahedron, Snelson's tower), simulated live: the struts never touch, a prestressed cable net holds them. Remove the prestress, add a load or cut a cable, and you see that the stiffness comes from tension. Exhibit-ready.
Architecture & scenographyTry it
Chains with weight bags find the shape of pure tension by themselves; inverted they become a stone arch in pure compression, while the semicircle next to it cracks at the marked points. Single arch, a row of arches and the chain net of the Colònia Güell. Exhibit-ready.
Architecture & scenographyTry itCollections
How sound is made and shaped: synthesizers and samplers, envelopes and overtones, waveforms and timbre, voice and orchestra, room acoustics and sound scenography — all audible in your browser.
14 appsOpen collection
Mathematical questions open for decades, for which an AI model proposed solutions in 2026, as interactive apps: understand the problem, experience the result.
32 appsOpen collection
From neurons and gradients to transformers, RLHF and agents: machine learning you can touch.
39 appsOpen collection
DNA, replication, transcription, translation and cell division as explorable 3D models.
11 appsOpen collection
Perspective, ornament, structure and space: how art and architecture work with mathematics.
14 appsOpen collection
Hyperloop, autonomous vehicles, warehouses and conveyors: logistics as interactive simulation.
17 appsOpen collection
Heart, eye, voice, skeleton and nerves: the human body in 3D, layer by layer.
8 appsOpen collection
Monty Hall, Simpson, Berkson and base rates: where intuition fails us with numbers.
14 appsOpen collection
Planets, stars, black holes and space probes: the cosmos to explore.
6 appsOpen collection
Riemann, P vs NP, Poincaré and other great questions of mathematics, made tangible.
16 appsOpen collection
Counting, arithmetic and shapes: maths for beginners, playful and clear.
6 appsOpen collectionWant to use these apps in your courses? Let’s find out what works for you.
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