Field & Flow Chambers

KRAMERS ESCAPE OBSERVATORY

Kramers Escape Observatory

Observe

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

First touch

Change the noise and barrier, then compare escape events across repeated trajectories.

Worth watching

Finite observation leaves censored trajectories. Compare estimates only within the stated approximation.

FRESNEL DIFFRACTION OBSERVATORY

Fresnel Diffraction Observatory

Observe

Change a slit, wavelength, and screen distance. Observe near-field fringes becoming a far-field diffraction pattern.

First touch

Change the aperture and propagation distance, then compare the intensity patterns.

Worth watching

Near-field diffraction retains the quadratic phase. Compare it with the far-field limit.

QUANTUM TUNNELING OBSERVATORY

Quantum Tunneling Observatory

Observe

A stationary wave connects across a finite rectangular barrier, with transmitted and reflected probability flux.

First touch

Change energy, barrier height, and width; switch between wavefunction, density, and current.

Worth watching

Below the barrier, transmission remains possible. RUN changes only the phase; density and current remain stationary.

VECTOR FIELD ROOM

Flow Field Painter

Observe

Particles revealing local direction, attraction, rotation, and drift.

First touch

Change field modes and place attractors to see how trails bend.

Worth watching

The field becomes readable where many trails start curving the same way.

ORBIT GRAVITY OBSERVATORY

Gravity Slingshot

Observe

Gravity-bent paths, flybys, velocity vectors, and unstable multi-body traces.

First touch

Adjust masses and velocity, then watch whether a path loops, escapes, or slingshots.

Worth watching

Small velocity changes can turn a quiet orbit into a long escape.

INK DIFFUSION CHAMBER

Ink Plume Tank

Observe

Ink plumes spreading, sinking, fading, and curling inside a visual water tank.

First touch

Drop or drag ink, then compare still water, current, vortex, heavy ink, and ink art views.

Worth watching

The tail and lower density bands are often more informative than the first splash.

RANDOM WALK DIFFUSION FIELD

Random Walk Diffusion Field

Observe

Independent unbiased walkers forming a centered cloud whose mean-square displacement grows with step count.

First touch

Use START or STEP, then change walker count and step scale to compare cloud size and MSD.

Worth watching

This is a browser-local probability model, not a drift, collision, attachment, fluid, or personal measurement system.

VORTEX DYNAMICS CHAMBER

Vortex Flow Mixer

Observe

Vortex centers pulling, pushing, and spinning particle trails into readable flow.

First touch

Add vortices, reverse spin, switch sink/source behavior, and compare FLOW, PRESSURE, TRAIL, and VORTICITY lenses.

Worth watching

The useful moment is when neighboring centers stop looking like dots and start reading as one mixed field.

FLOW RESISTANCE CHAMBER

Flow Tank Lab

Observe

Dye, particles, and pale wake trails showing how a body changes the current inside a flow tank.

First touch

Change shape, medium, speed, size, angle, and wake gain, or draw a rough body directly in the tank.

Worth watching

Near Flow Field Painter and Vortex Flow Mixer, but focused on what becomes visible after a body interrupts the tank current.

OBSTACLE FLOW LAB

Obstacle Flow Lab

Observe

A blue-scale velocity magnitude field changing around user-made solid-mask obstacles on a 2D grid.

First touch

Add, move, or draw obstacles, then adjust flow speed, viscosity, obstacle size, and resolution.

Worth watching

Different from Flow Tank Lab: the focus is the computation grid, solid cells, probes, and diagnostics, not dye trails.

KARMAN VORTEX TANK

Karman Vortex Tank

Observe

A fixed cylinder wake evolving in a D2Q9 LBM grid, with speed, vorticity, density drift, and alternation metrics.

First touch

Start with Short observation / 2500 steps, compare the Speed, Vorticity, and Density views, and follow the progress display. Use Stop observation when needed.

Worth watching

Different from Obstacle Flow Lab: the body is fixed and the subject is whether the computed cylinder wake develops sign alternation over time.

CFD SOLVER LAB

CFD Solver Lab

Observe

Velocity, pressure proxy, divergence, residual, and solid mask changing inside a 2D projection-method grid.

First touch

Step, run, solve projection, switch views, move or draw solid geometry, and compare copy versus sponge outlet behavior.

Worth watching

Different from Obstacle Flow Lab: the subject is pressure projection and residual diagnostics, not only the visible speed field.

MAGNETIC FIELD CHAMBER

Magnetic Field Sandbox

Observe

N/S poles, field lines, iron-dust alignment, polarity, and interference between multiple poles.

First touch

Drag poles, add new ones, and switch lines, dust, force, and polarity lenses.

Worth watching

Dust makes the field feel physical without turning the room into a textbook diagram.

DISCHARGE DYNAMICS CHAMBER

Lightning Generator

Observe

Discharge paths seeking ground while charges, blocks, voltage, and noise alter the route.

First touch

Place charge, ground, or block points, then strike and compare bolt, field, branch, and residue views.

Worth watching

A good strike feels like it is searching, bending around blocks instead of just flashing.

SWARM EMERGENCE OBSERVATORY

Swarm Rule Mixer

Observe

Local separation, alignment, and cohesion becoming collective movement.

First touch

Scatter, add wind, trigger predator pressure, or change flock presets.

Worth watching

The interesting part is how the swarm regains order after disturbance.

RADIANCE CASCADE LIGHT TRANSPORT FIELD

Radiance Cascade Light Transport Field

Observe

A light source crossing fixed occluders while hierarchical ray intervals build a visible field.

First touch

Move the source, change cascade levels and angular samples, then compare coverage and error proxies.

Worth watching

The rays are a deterministic 2D transport model, not a hardware benchmark or a physical light measurement.

VOLUMETRIC ADVECTION FIELD

Volumetric Advection Field

Observe

A density field transported through a velocity model, with mass, flux, and dissipation changing as it moves.

First touch

Adjust advection and diffusion, then step the field and compare mass balance, boundary flux, and vorticity.

Worth watching

Local density can shift while the global mass balance remains visible; vortices and dissipation redraw the field.

SPECTRAL WAVE SURFACE FIELD

Spectral Wave Surface Field

Observe

Spectral components labeled by k and ω combining into a surface packet whose phase and group velocities separate.

First touch

Change wavenumber, frequency, amplitude, and phase, then step the packet across the surface.

Worth watching

The packet envelope follows group velocity while the carrier phase runs at its own speed.

EIKONAL GEODESIC WAVEFRONT OBSERVATORY

Eikonal Geodesic Wavefront Observatory

Observe

Arrival-time fields, level-set wavefronts, and predecessor paths in a positive-speed eight-neighbour graph.

First touch

Choose a speed-field preset, place SOURCE and TARGET, press SOLVE, then switch T HEATMAP, WAVEFRONT, and PATH.

Worth watching

Gradient and smooth-well fields bend least-cost paths while T(G), path cost, and the Bellman residual stay finite.

SOLITON SCATTERING FIELD

Soliton Scattering Field

Observe

Exact KdV tau profiles carry one or two localized pulses whose speed, collision shift, and residual can be read together.

First touch

Choose SINGLE or TWO-SOLITON, adjust k_fast and k_slow, then move TIME through the collision.

Worth watching

Use PROFILE, SCATTERING, INVARIANTS, and RESIDUAL to separate shape retention from numerical error; this is a dimensionless browser model, not a physical measurement.

CLOUD CHAMBER TRACK OBSERVATORY

Cloud Chamber Track Observatory

Observe

A seeded ensemble of charged-particle candidates leaves curved paths while a separate visibility rule selects which tracks appear.

First touch

Change particle type, field sign, momentum proxy, supersaturation, cooling, count, and seed, then RUN or STEP; drag SOURCE to move the origin.

Worth watching

The candidate-path hash stays separate from visibility as supersaturation and cooling change; this is a deterministic cloud-chamber model, not a detector.

PHOTOELASTIC STRESS OBSERVATORY

Photoelastic Stress Observatory

Observe

A deterministic 2D surrogate maps loading and polarizer angles to relative principal-stress difference patterns.

First touch

Choose PLATE, DISC, or NOTCH and PUSH or BEND, move the load point, then change load, alpha, beta, and the view lens.

Worth watching

ISOCHROMATIC and ISOCLINIC views separate two pattern readings; fringes are relative, not absolute material stress measurements.