OBSERVATION ROUTE / FIELD

Fields in Motion

For watching invisible forces become trails, currents, wakes, waves, and pressure.

FIELD

WHY TAKE THIS ROUTE

START

Follow this theme across the chambers. Choose this route when you want a field to push back: particles follow vector flows, gravity curves paths, vortices stir a surface, bodies make wakes, magnets pull lines, waves interfere, ink plumes sink, chemistry grows patterns, and lightning finds a path.

WHAT THIS ROUTE IS NOT

Use this as a visual route. These are tactile field models, not engineering solvers or measurement instruments.

FLOW LABS

Choose the flow experiment

FLOW RESISTANCE CHAMBER

Flow Tank Lab

Model
A visual approximation of flow around a tank body, not a CFD solver.
What you change
Body shape, medium, and display mode.
What you watch
Dye, particles, and wake-like motion.

OBSTACLE FLOW LAB

Obstacle Flow Lab

Model
An editable 2D solid-mask grid, not formal CFD or a Karman-only model.
What you change
Place, move, draw, and clear obstacles.
What you watch
The computed speed field and diagnostics.

KARMAN VORTEX TANK

Karman Vortex Tank

Model
A D2Q9 LBM/BGK cylinder wake. Observation runs keep the cylinder fixed; this is not an arbitrary-shape LAB.
What you change
Cylinder position while paused, preset, and view.
What you watch
Computed vorticity, sign alternation, and density drift.

CFD SOLVER LAB

CFD Solver Lab

Model
A simplified pressure-projection method, not CFD for engineering design.
What you change
Solid geometry, viscosity, iterations, and outlet.
What you watch
Pressure, divergence, and residual.

ROUTE LABS

CHAMBERS ON THIS ROUTE

STOCHASTIC / ESCAPE / KRAMERS ESCAPE OBSERVATORY

Kramers Escape Observatory

What to watch
Watch thermal fluctuations carry independent paths to a barrier top. Compare survival, first-arrival times, and a continuum reference.
Lab signal
Watch thermal fluctuations carry independent paths to a barrier top. Compare survival, first-arrival times, and a continuum reference.

OPTICS / DIFFRACTION / FRESNEL DIFFRACTION OBSERVATORY

Fresnel Diffraction Observatory

What to watch
Change a slit, wavelength, and screen distance. Observe near-field fringes becoming a far-field diffraction pattern.
Lab signal
Change a slit, wavelength, and screen distance. Observe near-field fringes becoming a far-field diffraction pattern.

QUANTUM / TUNNELING / QUANTUM TUNNELING OBSERVATORY

Quantum Tunneling Observatory

What to watch
Change the barrier height and width, then compare transmitted and reflected probability flux.
Lab signal
Change a finite barrier and observe the connected quantum wave, transmitted flux, and reflected flux in stationary scattering.

FIELD / VECTOR FIELD ROOM

Flow Field Painter

What to watch
Release particles into a rule-driven vector field and follow the streamlines.
Lab signal
Choose a flow rule and release particles through spirals, streams, and attractors.

ORBIT / ORBIT GRAVITY OBSERVATORY

Gravity Slingshot

What to watch
Adjust mass and speed until paths fall, escape, or whip around gravity wells.
Lab signal
Adjust mass and speed, then watch probes fall, escape, or whip around gravity wells.

VORTEX / VORTEX DYNAMICS CHAMBER

Vortex Flow Mixer

What to watch
Add vortices, reverse spin, and watch trails twist into turbulent flow.
Lab signal
Add vortices, reverse spin, and watch particles twist into trails, pressure zones, and turbulent flow.

RESISTANCE / FLOW RESISTANCE CHAMBER

Flow Tank Lab

What to watch
Change shape, medium, speed, and angle to watch dye trails and wake patterns gather in a flow tank.
Lab signal
Change the shape, flow, and medium, then watch dye, particles, and wake patterns gather around the body.

FLOW / OBSTACLE FLOW LAB

Obstacle Flow Lab

What to watch
Place and move solid obstacles on a 2D grid, then compare the computed speed field and diagnostics.
Lab signal
Place, move, and draw solid obstacles on a 2D grid, then watch the computed speed field and diagnostics respond.

FLOW / KARMAN VORTEX TANK

Karman Vortex Tank

What to watch
Run a fixed-cylinder D2Q9 LBM wake and watch computed vorticity sign alternation emerge over time.
Lab signal
Run a fixed-cylinder D2Q9 LBM wake experiment and read computed speed, vorticity, density drift, and sign alternation metrics.

FLOW / CFD SOLVER LAB

CFD Solver Lab

What to watch
Step a projection-method grid solver and compare pressure, divergence, residual, outlet, and solid-mask diagnostics.
Lab signal
Step a browser projection-method grid solver and inspect velocity, pressure proxy, divergence, residual, boundary, and solid-mask diagnostics.

MAGNETIC / MAGNETIC FIELD CHAMBER

Magnetic Field Sandbox

What to watch
Move poles and watch lines, particles, and polarity settle into a field.
Lab signal
Place poles and watch field lines and iron dust swing into alignment.

INTERFERENCE / WAVE INTERFERENCE BASIN

Wave Interference Basin

What to watch
Place wave sources and compare heights, nodes, phase, and basin echoes.
Lab signal
Add wave sources and watch nodes, echoes, and interference bands spread across the basin.

INK / INK DIFFUSION CHAMBER

Ink Plume Tank

What to watch
Drop ink into a tank and watch plumes sink, curl, spread, and fade.
Lab signal
Drop ink into water and watch plumes sink, curl, spread, and fade.

PROBABILITY / DIFFUSION / RANDOM WALK DIFFUSION FIELD

Random Walk Diffusion Field

What to watch
Release independent walkers from one origin and watch an unbiased cloud spread with the square root of time.
Lab signal
Release independent walkers from one origin and watch unbiased steps form a spreading cloud whose radius follows diffusion.

REACTION / REACTION DIFFUSION CHAMBER

Pattern Chemistry Lab

What to watch
Tune pattern chemistry until spots, stripes, and cellular bands appear.
Lab signal
Adjust feed and kill rates to grow spots, stripes, and cells.

DISCHARGE / DISCHARGE DYNAMICS CHAMBER

Lightning Generator

What to watch
Raise voltage, place obstacles, and watch a branching route search for ground.
Lab signal
Raise voltage, place obstacles, and watch lightning find ground.

LIGHT / TRANSPORT / RADIANCE CASCADE LIGHT TRANSPORT FIELD

Radiance Cascade Light Transport Field

What to watch
Move one light source around fixed occluders and inspect hierarchical ray intervals, visible coverage, and sampling error.
Lab signal
Move one light source around fixed occluders and inspect hierarchical ray intervals, visible coverage, and sampling error in a deterministic 2D field.

FLOW / ADVECTION / VOLUMETRIC ADVECTION FIELD

Volumetric Advection Field

What to watch
Advect a seeded density field and compare mass balance, boundary flux, and transport traces as it moves.
Lab signal
Follow a seeded density field through a velocity model and inspect advection, diffusion, flux, vorticity, and dissipation as the field moves.

WAVE / DISPERSION / SPECTRAL WAVE SURFACE FIELD

Spectral Wave Surface Field

What to watch
Combine k-ω components and follow a wave packet as dispersion separates phase and group velocity.
Lab signal
Combine spectral components on a surface and observe how wavenumber, phase, dispersion, and group velocity shape a moving wave packet.

FIELD / EIKONAL WAVEFRONT / EIKONAL GEODESIC WAVEFRONT OBSERVATORY

Eikonal Geodesic Wavefront Observatory

What to watch
Set a positive speed field, place source and target, and watch arrival-time fronts and least-cost paths bend.
Lab signal
Observe arrival time, wavefronts, and fastest paths in a positive speed field with a deterministic eight-neighbour eikonal graph.

WAVE / NONLINEAR DISPERSION / SOLITON SCATTERING FIELD

Soliton Scattering Field

What to watch
Launch exact KdV pulses and compare collision phase shifts, conserved integrals, and the finite-difference residual.
Lab signal
Observe exact KdV single and two-soliton profiles: amplitude-speed coupling, collision phase shifts, conserved integrals, and a finite-difference PDE residual.

PARTICLE / TRACK VISIBILITY / CLOUD CHAMBER TRACK OBSERVATORY

Cloud Chamber Track Observatory

What to watch
Set particle and chamber conditions, then run seeded paths and compare the fraction that becomes visible.
Lab signal
Observe a seeded ensemble of charged-particle candidates and how supersaturation and cooling select a visible track fraction.

FIELD / PHOTOELASTIC STRESS / PHOTOELASTIC STRESS OBSERVATORY

Photoelastic Stress Observatory

What to watch
Load a sample, move the load point, rotate the polarizers, and compare relative stress-difference fringes.
Lab signal
Observe a deterministic 2D photoelastic surrogate: load a sample, rotate the polarizers, and read relative principal-stress difference patterns.

ROUTES

OTHER ROUTES

GEOMETRY

Shape & Space Open this route. 19 labs

FIELD

Fields in Motion Current route. 23 labs

GROWTH

Growth & Thresholds Open this route. 8 labs

SIGNAL

Signals & Networks Open this route. 16 labs

LIFE-LIKE

Life-like Emergence Open this route. 5 labs

STRUCTURE

Structures & Symmetries Open this route. 21 labs

GUIDE

DEEPER GUIDE CATEGORIES

FIELD

Field & Flow Chambers Read the phenomenon guide.

SIGNAL

Signal & Dynamics Chambers Read the phenomenon guide.

NEARBY ROUTES / GEOMETRY

Shape & Space Move to a nearby way of seeing.

NEARBY ROUTES / SIGNAL

Signals & Networks Move to a nearby way of seeing.