charfield

Interactive ASCII canvas field animations. Copy-in, no runtime dependency - pull only the ones you need. Hover any tile; the cursor is a gravity well.

$ npx charfield add flowfield44 fieldsplaygroundnpmGitHub
Astrophysicsgravitationalwave

Gravitational Wave

Binary inspiral chirp - two masses spiral in, radiating a quadrupole wave.

Quantum Mechanicsinterference

Double Slit

Two coherent sources; intensity = |Σ cos(kr − ωt)|².

Quantum Mechanicssuperposition

Superposition

|ψ⟩ = Σ cₙ|φₙ⟩ - box eigenstates beat; |ψ|² sloshes.

Quantum Informationentanglement

Entanglement

Bell pair - anti-correlated lobes, bridge, collapse pulses.

Qubit · spinblochsphere

Bloch Sphere

State vector precessing + nutating on the Bloch sphere.

Qubit · superconductingtransmon

Transmon

Josephson −cos φ well with a pulsing anharmonic ladder.

Qubit · trapped-iontrappedion

Trapped Ion

Ion chain in a harmonic trap, normal-mode motion.

Qubit · anyontopological

Topological

Anyon world-lines braiding through space and time.

Quantum Mechanicsorbital

d-Orbital

Hydrogen probability density |ψ|², precessing + breathing.

Acoustics / Mechanicschladni

Chladni Plate

Sand gathers on the nodal lines of a vibrating plate; modes morph.

Statistical Mechanicsising

Ising Model

Spin-lattice domains near criticality, walls glowing as they flip.

Fluid Dynamicsflowfield

Turbulence

Domain-warped flow - advected vorticity / smoke.

Astrophysicsblackhole

Black Hole

Event-horizon void, photon ring, Doppler-beamed accretion disk.

Astrophysicsgalaxy

Galaxy

5-arm logarithmic spiral with differential rotation.

Wave Mechanicsripples

Ripples

Concentric harmonic waves from staggered drop points.

Wave Mechanicswaves

Flow

Drifting horizontal wave train.

Relativitylensing

Gravitational Lensing

A mass bends a background starfield into arcs + an Einstein ring.

Astrophysicspulsar

Pulsar

Tilted magnetic beams sweep like a lighthouse.

Astrophysicsnbody

N-Body

Gravitating bodies on nested orbits with fading trails.

Quantum Mechanicstunneling

Tunneling

Wave packet partly reflects, partly tunnels through a barrier.

Quantum Mechanicsqho

Harmonic Oscillator

QHO eigenstates |ψₙ|² climbing the ladder (Hermite × Gaussian).

Quantum Informationquantumwalk

Quantum Walk

Ballistic two-horned spread vs a diffusive classical walk.

Quantum Opticswigner

Wigner Function

Cat-state phase space: two lobes + non-classical interference.

Quantum Mechanicsaharonovbohm

Aharonov–Bohm

Confined flux winds the interference fringes with angle.

Quantum Opticsrabi

Rabi Oscillations

Driven two-level atom: population sloshes |g⟩ ↔ |e⟩.

Quantum Informationdecoherence

Decoherence

Density matrix off-diagonals decay: pure → mixed.

Quantum Informationcorrelationgrid

Correlation Grid

Lattice of entangled pairs flickering in lockstep.

Quantum Computinggrover

Grover Search

Amplitude amplification grows the marked state's bar.

Condensed Mattervortexlattice

Vortex Lattice

Abrikosov triangular array of quantized vortices.

Condensed Matterhofstadter

Hofstadter Butterfly

Self-similar energy spectrum vs magnetic flux.

Condensed Matterbandstructure

Band Structure

E(k) bands with a gap at the zone boundary.

Condensed Matterfermisurface

Fermi Surface

cos kx + cos ky = μ contour, filling sweeping.

Condensed Matterquasicrystal

Quasicrystal

5-fold plane-wave sum - quasiperiodic, never repeats.

Reaction-Diffusionturing

Turing Patterns

Activator-inhibitor labyrinth, slowly morphing.

Nonlinear Wavessoliton

Solitons

KdV sech² pulses collide and pass through intact.

Chaosdoublependulum

Double Pendulum

Chaotic trace of the lower bob, sensitive to initial conditions.

Chaoslorenz

Lorenz Attractor

The butterfly - orbit switching between two wings.

Nonlinear Chemistrybz

Belousov–Zhabotinsky

Spiral waves in an excitable medium.

Statistical Mechanicspercolation

Percolation

Sites occupy past p_c - a spanning cluster appears.

Mechanicsphasespace

Phase Space

Pendulum energy contours; separatrix between libration & rotation.

Mechanicslissajous

Lissajous

Orthogonal oscillations; ratio sets the knot, phase drifts.

Electromagnetismdipole

Dipole Field

Field lines of two opposite charges.

Field Theoryfeynman

Feynman Diagram

e⁻e⁺ → γ* → e⁻e⁺ with a wavy photon propagator.

Field Theorylatticegauge

Lattice Gauge

Grid links + flickering plaquette field strengths.