Model Room is a collection of mathematical curves and molecular structures rendered at true scale in a volume you can walk around. Nineteenth-century universities kept rooms like this — shelves of plaster surfaces beside ball-and-stick models — because some things only make sense once you can step around them.
Viviani's curve, with its shadow cast onto all three walls — a circle, a parabola and a figure-eight, from one curve.
Two Galleries, One Room
39 entries
Mathematics
Space curves inside a coordinate box, each casting a dotted shadow onto all three walls. Knots that cannot be untied, and one that looks knotted but isn't. Spirals that grow geometrically beside spirals that grow linearly. Rolling-wheel curves lifted out of the plane, and Lissajous figures at frequencies that never fall back into step.
50 entries
Chemistry
Structures in ball-and-stick, in the CPK colours chemists read without thinking, turnable in your hands. Small molecules and coordination shapes, cages and crystals, acids, bases and the ions they come apart into — and a shelf of medicines.
The Cases That Only Work in 3D
- Methane — a real 109.47° tetrahedron, which a flat cross drawing makes look like four right angles.
- Cyclohexane, chair and boat — the same molecule, two shapes, and the reason three dimensions matter.
- Diamond and graphite — identical atoms, opposite properties, entirely because of arrangement. Graphite's layers are drawn with no bonds between them, because there are none.
- Cisplatin and transplatin — same formula, same bonds, one a cancer drug and one inert. The isomerism is the pharmacology.
- Penicillin G and V — one added oxygen turns an injected antibiotic into a tablet, and you can see exactly where it sits.
- Viviani's curve — one curve whose three shadows are a circle, a parabola and a figure-eight. No single flat drawing can hold that.
Screenshots
Features
- Built for visionOS — a volumetric window you walk around, not a flat panel. The coordinate box is aligned to the window's own faces, so you change the view by moving.
- Every geometry is sourced — bond lengths and angles come from published experimental structures, or are derived from symmetry where symmetry determines them. Nothing is sketched by eye, and each entry names where its geometry came from.
- Written to be read — every entry explains what you are looking at and why it is worth looking at: what the shape causes, or disproves, or what a flat picture gets wrong about it.
- Shadows on three walls — each curve's projection is drawn on the floor and both walls, so you can see what it does in every coordinate at once.
- Searchable and grouped — the catalogue is organised by category with search, and a filter to show only what you already have.
- Colour key — every structure lists the elements it contains with their colours and atom counts.
- More to come — surfaces, vector fields and atomic orbitals are planned. Future additions are included in the unlock.
Specifications
Pricing
29 entries free, across every category
One in-app purchase unlocks the rest permanently, including all future additions. No subscription.
Contact
Questions, feedback, or a structure you would like added? Email me at
fftu0316@gmail.com
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