Linearly polarized light rotates by β = V·B·L along a magnetic field. Tune B, L and material to see the polarization helix wind, the β-vs-B line, and the nonreciprocal double-pass behind optical isolators.

Physics

Kelvin-Helmholtz Instability — Two-Phase Shear Flow

Two fluid layers sliding past each other destabilize at their interface into the characteristic KH billows. Tune density ratio, shear, surface tension, and toggle magnetic (MHD) stabilization.

Physics

Cherenkov Radiation & Mach Cone

When a charged particle exceeds the phase speed of light c/n in a medium, it emits a coherent blue shock-cone. Slide the speed and index to see the cone form, vanish below threshold, and match the acoustic Mach cone.

Physics

Fresnel Diffraction Zones — Half-Period Bands & the Poisson Spot

Near-field diffraction from half-period zone decomposition. Toggle between circular aperture and opaque disk — watch the Poisson bright spot appear at the center behind an obstruction.

Physics

Ferrofluid Rosensweig Instability — Hexagonal Spike Formation

Apply a vertical magnetic field and watch hexagonal spikes spontaneously emerge above the critical field Bc. A competition between magnetic energy and surface tension/gravity.

Physics

Casimir Effect — Quantum Vacuum Force

Two neutral conducting plates in vacuum attract each other due to restricted quantum vacuum fluctuations. Adjust separation, geometry, and material to explore the force.

Biology

Waddington's Epigenetic Landscape — Cell Fate Decision

Conceptual Waddington landscape: cells drift from a pluripotent summit into lineage-biased valleys in a potential-like field inspired by gene regulation and epigenetic stabilization.

Math

Arnold's Cat Map — Chaotic Area-Preserving Map

Interactive Arnold Cat Map visualization: (x', y') = ((x+y) mod N, (x+2y) mod N). Iterations scramble the image, but after exactly K steps it restores perfectly — chaos with hidden order.

Physics

Black Hole Accretion Disk

Interactive relativistic black hole accretion disk visualization with Doppler beaming, gravitational redshift, and thin-disk temperature profile T(r) ∝ r⁻³ᐟ⁴

Physics

Chladni Cymatics Plate

Interactive 2D Chladni plate vibration patterns — sand particles accumulate on nodal lines of plate eigenmodes, revealing beautiful geometric patterns governed by the Helmholtz equation

Biology

STDP Synapse

Interactive Spike-Timing-Dependent Plasticity (STDP) visualization — explore how precise spike timing shapes synaptic weights, the neural basis of learning and memory

Physics

Kelvin-Helmholtz Shear Layer

Real-time 2D shear-layer instability simulation via the vorticity-streamfunction method, showing perturbation growth, vortex rollup, and pairing dynamics