⚡ Physics & Mechanics

SPH FluidPopular📱Fluid simulation via SPH: pressure, viscosity, gravity and wall bouncing. Splash impulse… Debye Model — Heat Capacity of Solids (2D)New📱Interactive 2D plot of the Debye heat capacity curve C(T)/3Nk_B, with an animated phonon… Figure Skater Spin Dynamics (2D)New📱A top-down 2D simulation of angular momentum conservation: pull a spinning figure skater's… Floating Islands Archipelago (2D)New📱A side-view Canvas2D archipelago of bobbing floating islands with jagged rock undersides,… Photon Lab: Laser Cutting Physics (2D)New📱Drag a laser cutting line across birch plywood, cast acrylic, or carbon steel and watch the… Maglev Train: Levitation & Propulsion Physics (2D)New📱Interactive 2D cross-section of a maglev train: adjust throttle, coil current and train mass… Truck Crash Simulator: Momentum & Impact Physics (2D)New📱Interactive 2D companion to the 3D truck crash lab. Adjust approach speed, cargo load and… Train Crash Simulator (2D)New📱Top-down 2D rail-impact sandbox: two five-car freight trains close in from opposite ends of… Drop Boulder Simulator (2D)New📱Side-view Canvas2D companion to the 3D crane-drop lab: release a boulder from an adjustable… Highwall Coal Mining: 2D Cross-Section (2D)New📱2D side-view cross-section of a highwall coal mining auger cutting into a seam. Advance the… Ocean Fishery (2D)New📱A 2D top-down trawl fishery simulator: set the fishing quota and net mesh size and watch… Seesaw / Teeter-Totter Physics Simulator (2D)New📱A side-view seesaw sandbox: add weighted riders to either seat of a rigid, pivoted plank and… High-Tc Superconductivity: Meissner Levitation Simulator (2D)New📱A 2D cross-section Meissner-effect simulator: cool a superconducting disk below its critical… Metamaterial Negative Refraction (2D)New📱Interactive 2D ray-and-wavefront simulation of negative refraction in an electromagnetic… Gas Separation: Membrane Effusion (2D)New📱A 2D kinetic-theory gas simulation where light and heavy molecules diffuse through a porous… Hercules Beetle Horn Duel (2D)New📱Two rival male Hercules beetles lock their giant curved horns on a branch and push for… Gravity Playground (2D)New📱Drop circles, squares, triangles and pentagons onto a floor and watch them fall under… Comet Ice Sublimation — Cross-Section (2D)New📱Canvas2D companion: a rotating cross-section of a comet nucleus where local temperature,… Double Pendulum Phase-Space & Poincaré Explorer (2D)New📱Canvas2D companion: an RK4-integrated Lagrangian double pendulum plotted as its own… Giant Squid Abyss — Jet Propulsion & Pressure (2D)New📱Canvas2D companion: a cross-section of the deep ocean where a giant squid uses Newtonian jet… Roulette Wheel Physics (2D)New📱Canvas2D companion: a top-down roulette wheel where the ball's angular deceleration and a… Spring Mass Network (2D)New📱Canvas2D companion: a 2D lattice of point masses linked by Hookean structural and diagonal… Hot Air Balloon Buoyancy (2D)New📱A 2D Canvas simulation of hot-air balloon buoyancy driven by the ideal gas law: heat the… Billiards — Elastic Collision Physics (2D)New📱A top-down 2D billiards table where fifteen numbered balls and a cue ball collide as rigid… Truss Bridge Builder — Drag-and-Drop Beam Stress Test (2D)New📱Place nodes and drag beams to design a truss bridge spanning a pin and roller support, then… Fire & Smoke Fluid Solver (2D)New📱A real 2D stable-fluids simulation: semi-Lagrangian advection and Jacobi diffusion move… 2D Ising Model — Metropolis Monte Carlo Ferromagnet (2D)New📱A square lattice of up/down spins evolves under the Metropolis Monte Carlo algorithm using… Falling Sand: Sand, Water, Smoke & Fire Automaton (2D)New📱A 2D Canvas cellular-automaton sandbox where you paint sand, water, smoke or fire onto a… Mechanical Linkages Simulator (2D)New📱A 2D Canvas2D companion to the 3D Mechanisms simulation, showing six real kinematic… Lennard-Jones Fluid Dynamics (2D)New📱A 2D molecular dynamics simulation of a Lennard-Jones fluid: atoms interact through the… 2D Crystal Lattices — Square, Hexagonal, Rectangular & Centered (2D)New📱Explore the four fundamental 2D Bravais lattices — square, hexagonal, rectangular, and… 2D Chain & Rope — Verlet Dynamics (2D)New📱A 2D companion to the 3D chain simulation: a verlet-integrated point-mass chain linked… 2D Drum Membrane — Circular Wave & Bessel Modes (2D)New📱Watch a circular drum membrane vibrate in real time from directly above, colour-mapped by… Granular Materials Pile Simulation (2D)New📱A real-time 2D discrete-element simulation of granular particles: circular grains fall under… 2D Lorenz Attractor Projection (2D)New📱A 2D Canvas projection of the real chaotic Lorenz system, integrated with RK4. Adjust sigma,… Maxwell's Wheel Descent (2D)New📱A 2D side-view simulation of Maxwell's wheel: a disk winds and unwinds on strings around its… Parachute Drop (2D)New📱A 2D side-view parachute drop simulator built on real quadratic air-drag physics. Adjust… Solid Body Fracture — Impact Energy Shatter (2D)New📱A 2D companion to the Voronoi impact-fracture simulator. Launch an impactor at a brittle… Vibrating String — Plucked Wave Shape (2D)New📱A 2D Canvas simulation of a plucked string that solves the real wave equation. Adjust the… Z-Pinch Plasma Compression (2D)New📱Drive an axial current through a plasma column and watch the magnetic Lorentz (J×B) force… Catenary (2D)New📱Drag the two endpoints of a hanging chain in this 2D canvas simulation and watch the exact… Gyroscope Precession (2D)New📱Tilt a spinning gyroscope top-down and release it to watch gravity's torque sweep the axle… Ising Model — Temperature & Critical Point (2D)New📱A Canvas2D companion to the 3D Ising model: the same real two-dimensional lattice of up/down… Viscoelastic Fluid (2D)New📱Apply a step strain or step stress to a spring-dashpot mechanical analog and watch the real… Projectile Motion (2D)New📱Launch a projectile in this 2D Canvas simulator and watch the real kinematic trajectory… Rope Physics — Verlet Chain Simulation (2D)New📱A 2D Canvas rope and chain simulation built from point masses connected by real… Archimedes' Principle Buoyancy Cross-Section (2D)New📱A 2D side-view cross-section of an object floating or sinking in a fluid tank: adjust its… Spherical Pendulum — Top-Down Rosette Trace (2D)New📱Watch a spherical pendulum's bob trace a precessing rosette path from directly above,… Magnetic Field Simulator: Bar Magnets, Wires & Loops (2D)New📱Interactive 2D magnetic field visualiser. Place bar magnets, current-carrying wires and… Astrophysics: Stellar Evolution & H-R Diagram (2D)New📱Interactive 2D Hertzsprung-Russell diagram: set a star's mass to see its temperature,… Waterfall Physics: Falling Water Droplets (2D)New📱Interactive 2D simulation of a waterfall: gravity, air drag and wind act on each falling… Ball Mill Classifier Loop (2D)New📱Interactive 2D cross-section of a tumbling ball mill in closed circuit: steel grinding media… Whip Crack Physics (2D)New📱A 2D rope-physics simulator. It shows a tapered whip's wave speeding up into a supersonic… Tsunami Wave Cross-Section (2D)New📱Watch a tsunami wave propagate across a side-view cross-section of the ocean floor in real… Alpine Flight Simulator (2D)New📱A 2D side-view flight sim showing lift, drag, thrust and gravity as an aircraft flies over… Bouncing Balls Physics: Momentum (2D)New📱A 2D Canvas ball-pit where every ball-ball collision resolves as a mass-weighted elastic… Cloud Seeding Lab (2D)New📱A 2D canvas simulation shows aerosol nucleating cloud droplets into ice crystals that grow… Newton's Cradle: Momentum & Energy Conservation (2D)New📱A 2D Newton's cradle where each ball is simulated as a pendulum and a collision rule… Deep Sea Jellyfish (2D)New📱A 2D canvas model of jellyfish swimming by jet propulsion, with bioluminescent plankton… Dice Rolling Physics (2D)New📱A top-down 2D physics simulation of two tumbling dice settling under gravity and bounce… Driven Resonance: Forced Oscillator (2D)New📱A mass-spring-damper driven by a sinusoidal force, showing amplitude and phase lag versus… Falling Dominoes Spiral (2D)New📱Top-down 2D view of a spiral of dominoes toppling outward from the center in a chain reaction. Fire Particle Simulation (2D)New📱A 2D canvas particle plume that shows a flame's buoyant rise and its color shift from… Heart and Circulation (2D)New📱A 2D top-down model where the heart's lub-dub pulse cycle drives blood-cell flow speed… Honey Export Packaging & Cold Chain (2D)New📱A 2D cutaway of a honey export container where temperature, container mode, packaging format… Hot Air Balloon Ascent (2D)New📱A 2D buoyancy simulation showing how burner heat, vent cooling and altitude-dependent air… Iceberg Buoyancy Physics (2D)New📱A 2D side-view iceberg whose submerged fraction is computed live from ice and water density… Snow Globe Dynamics (2D)New📱Shows snow settling and swirling inside a circular glass boundary under gravity, turbulence… Kite Flight Physics (2D): Lift, Torque & a Sagging TetherNew📱A 2D canvas simulation of a rigid-body kite flying on a spring-damper tether whose sag is… Lunar Tide: Bulge Lag & Orbital Recession (2D)New📱A 2D simulation of tidal locking: Earth's tidal bulge lags behind the Earth-Moon line due to… Magma Physics Simulator (2D)New📱A 2D cross-section of a magma chamber where gas bubbles rise, pressure builds, and the vent… Magnetic Drum Separator: Magnetite Recovery (2D)New📱A 2D belt-and-drum view where field strength, feed rate and particle size decide how much… Paper Airplane Flight: Lift & Glide (2D)New📱A 2D canvas simulation of a paper airplane's glide using a lift/drag aerodynamic model with… Pendulum Wave Interference Simulation (2D)New📱Shows a row of pendulums with slightly different periods superposing into a travelling wave… Pinball Machine: Momentum & Energy Transfer (2D)New📱A top-down 2D pinball table where a ball's momentum reflects off bumpers and flippers under… Polar Aurora Magnetosphere Simulator (2D)New📱A 2D cross-section showing how solar wind speed compresses Earth's magnetosphere and shifts… Precessing Gyroscope: Force & Rotation (2D)New📱A top-down 2D view of a spinning gyroscope showing how gravity torque makes it precess… Rhino Mud Wallow (2D)New📱A 2D top-down model where rhinos heat up in the sun and cool off by wallowing in mud that… Sand Dredging: Slurry Transport & Critical Velocity (2D)New📱A 2D cutter-suction dredge lab showing how pump flow, pipe diameter, particle size and… Simple Machines: Trading Force for Distance (2D)New📱2D canvas lab showing how a lever, pulley system or inclined plane trades applied force for… Smash Glass Physics Simulator (2D)New📱A 2D canvas simulation of glass fracture where impact force, glass type and thickness… Standing Waves: Multi-Source Interference (2D)New📱A 2D top-down ripple tank where several point sources emit circular waves that sum by… Throw Spear Simulator (2D)New📱A 2D side-on range where a thrown spear follows gravity, aerodynamic drag and wind toward a… Wind Tunnel: Airfoil Lift & Drag (2D)New📱A 2D wind tunnel showing potential flow around an airfoil, with live lift, drag and stall… Ash Cloud Dispersal: Plume Height & Isopach Fallout (2D)New2D volcanic-ash companion: the Mastin plume-height law sets column rise from mass eruption… Ballistics Physics Overview (2D)New📱Side-view cannon range where you fire a projectile and watch gravity, drag and wind shape… Atmospheric Balloon Network (2D)New📱A 2D canvas simulation of weather balloons climbing on buoyancy and gas expansion, bursting… Atom Interferometer Fringe Diagram (2D)New📱A flattened 2D path diagram of a pi/2-pi-pi/2 atom-interferometer pulse sequence, with live… Bauxite Desliming Classifier (2D)New📱A 2D counter-current wash classifier where bauxite grains and clay slimes settle by real… Bentonite Activation & Drying: Ion Exchange & Moisture Kinetics (2D)New📱2D process lab: soda-ash cation exchange converts calcium bentonite to sodium bentonite on a… Blackhole Ring: Photon Geodesics & the Photon Sphere (2D)New📱A 2D Schwarzschild ray tracer where light rays follow real RK4-integrated null-geodesic… Blast Movement Monitoring (2D)New📱Top-down bench-blast lab where you place tracking markers, detonate a column-by-column… Bonfire: Sparks & Smoke (2D)New📱A Canvas2D bonfire showing buoyant flame, embers and smoke, with sliders for flame… Bouncing Balls Physics (2D)New📱A 2D Canvas ball-pit driven by real physics: gravity, floor/wall restitution and… Bridge Resonance Dynamics (2D)New📱A 2D driven damped-harmonic-oscillator model of a bridge deck, letting you tune driving… Candle Flame Simulation (2D)New📱A 2D stable-fluids solver simulates convection and heat transfer above a candle wick, with… Cloud Seeding Microphysics (2D)New📱A 2D canvas simulation showing aerosol nuclei activate into droplets and grow into rain,… 2D Ball Collisions -- Canvas Momentum LabNew📱A Canvas2D sandbox where you set ball count, mass ratio, restitution and gravity and watch… Conservation Laws: Elastic Collisions & Resource Stock (2D)New📱A 2D canvas lab where discs conserve kinetic energy and momentum in elastic collisions next… Star Schema Design Lab (2D)New📱A 2D star schema diagram showing a central fact table wired to dimension tables, with… Domino Chain Reaction — 2D Toppling CascadeNew📱A 2D canvas simulation where a row of dominoes topples one after another under gravity, with… Planetary Gravity Exploration Dashboard (2D)New📱2D orbital-mechanics sandbox: a spacecraft orbits a planet under real inverse-square… Rigid-Body Physics Sandbox (2D)New📱A 2D canvas sandbox where balls fall under adjustable gravity and bounce off each other and… Electrowinning Cell (2D)New📱A 2D copper electrowinning cell where Faraday's and Ohm's laws compute real deposition rate,… Scalar Field on a Lattice (2D)New📱A 2D top-down Canvas heatmap of the same Klein-Gordon field equation as the 3D version,… Froth Flotation Cell — Bubble-Particle Attachment (2D)New📱2D froth flotation lab: simulated bubbles rise through a pulp of valuable and gangue… Foucault Pendulum (2D Top-Down)New📱Top-down 2D view of a Foucault pendulum where you control swing amplitude, latitude and time… Fracture Simulation (2D)New📱Click an object to shatter it into Voronoi fragments with adjustable cell count, impact… Gravity Well Particle Lab (2D)New📱Top-down Canvas2D view of particles spiraling into a central mass under an inverse-square… HPGR Pressure Zone (2D): Throughput, Force & Product SizeNew📱2D cross-section of a High Pressure Grinding Roll nip zone: real throughput, specific-energy… Gyroscope Spin & Precession (2D)New📱A 2D canvas gyroscope where you set spin rate, tilt angle, torque and inertia and watch the… Kick Asteroid: 2D Launch Force, Angle & Bounce PhysicsNew📱A 2D side-view lab where you kick an asteroid with adjustable force and angle across four… Kick Crystal Physics (2D)New📱A faceted crystal bounces under gravity on a 2D canvas, with adjustable restitution, mass… Kite Aerodynamics 2D: Lift, Drag & String TensionNew📱Canvas2D kite simulator computing real lift/drag from relative wind and angle of attack,… Lily Pond Ripples (2D)New📱A top-down Canvas2D pond where raindrops spawn overlapping ring waves and lily pads bob on… Lunar Halo Simulator (2D)New📱A 2D canvas sky where moon altitude, moonlight and ice-crystal density set a physically… Magnetic Pulley Separator: Induced-Angle Sorting (2D)New📱A 2D side-view model of a magnetic head-pulley separator where you control field strength,… Marble Run: Friction & Gravity Test (2D)New📱2D marble-run lab: beads roll along a closed hilly track with tangential acceleration… Newton's Laws of Motion Simulator (2D)New📱A flat 2D view where two carts collide on a frictionless track and you control mass, launch… Mineral Hardness Scratch Test (2D)New📱A 2D scratch-test lab where you set sample and indenter hardness plus load, then run a pass… Porcupine Sentinel Warning System (2D)New📱Top-down 2D model where porcupine sentinels scan for predator risk and raise alerts that… Projectile Motion Simulation (2D)New📱A real numerically-integrated ballistics lab: set launch angle, launch speed, gravity… Prosthetic Gait Control (2D)New📱A 2D side-view leg model where you control walking speed, terrain roughness and a… Pulsar Beams (2D)New📱A 2D pulsar lighthouse model: control spin rate, beam width and magnetic obliquity while a… Pulsar Neutron Star: Spin Speed (2D)New📱A 2D lighthouse-model pulsar where you control spin rate, beam width and observer… Raman Spectroscopy (2D)New📱Fire a laser at a reference mineral and watch the scattered-light Raman spectrum build in… Catapult Physics Simulator (2D)New📱A side-view 2D catapult simulator where you set launch angle, stored energy, projectile mass… Planet Impact Simulator (2D)New📱A 2D cross-section lab where impactor diameter, velocity, angle and composition drive a real… Supernova Remnant Simulator (2D)NewA 2D cross-section supernova remnant that expands using shock-radius and speed formulas,… Respirable Dust Simulation (2D)New📱A 2D cross-section where dust particles settle by Stokes' law based on size, with sliders… Ripple Pond (2D)New📱A top-down 2D heightfield where circular ripples spawn and superpose, with wave-speed,… Roman Horologium: Sundial Shadow Simulator (2D)New📱A working sundial, not a walk-through model: real solar-position equations (declination,… Rutherford's Gold Foil Experiment (2D)New📱Fire alpha particles at a foil of gold atoms and watch the real tan(theta/2) = D/b… Satellite Orbit — 2D Gravity LabNew📱A top-down 2D simulation where real two-body gravity drives the satellite, letting you set… Simple Pendulum: Period, Mass & Length (2D)New📱A single adjustable simple pendulum showing how length changes its period while mass does not. Smart Home Thermal & Energy Model (2D)New📱A 2D RC thermal model of a house where you control outdoor temperature, insulation,… Smash Car Physics Simulator (2D)New📱A wrecking-ball pendulum swings under gravity and lets you compare impact speed, crumple… Jelly Bounce: Squash & Stretch Soft Body (2D)New📱A 2D Canvas jelly ball that squashes and stretches as it bounces, with sliders for gravity,… Planetary Orbits in a Dynamic Solar System (2D)New📱A top-down 2D view of the same eight-planet solar system, positioned every frame by solving… Space Elevator: Gravity vs Centrifugal Force (2D)New📱A 2D climber moves along a cable from Earth to a counterweight while you watch the real… Spacecraft Docking Autopilot (2D)New📱A PD controller reads noisy position telemetry and fires fuel-limited thrust to bring a… Gyroscope Precession: Torque & the Precession Cone (2D)New📱2D canvas gyroscope lab: adjust spin rate, tilt angle, mass and gravity to watch the… Steampunk Engine: Slider-Crank Piston Mechanism (2D)New📱A flat side-view drawing of the same three-piston slider-crank engine as the 3D model, with… Storm Vine (2D)New📱A 2D canvas simulation of a vine growing along a branching logarithmic spiral, where storm… Wave Interference Simulation (2D)New📱A top-down heat-map view of two-source wave interference where you drag a source and tune… Zen Garden (2D)New📱A top-down 2D sand height-field you rake into furrows and set stones into, with wind erosion… Volcano Observatory (2D)New📱A 2D dashboard where a magma-chamber pressure model drives live seismicity, SO2 flux and… Volcano Type Comparator (2D)New📱A 2D cutaway volcano where you set magma viscosity and gas content to compare shield,… Ice Crystal Growth (2D)New📱A 2D canvas view of a recursive, hexagonally-mirrored ice-crystal branch model with live… XRT Lump Ore Sorter: Dual-Energy X-Ray Sorting (2D)New📱A 2D canvas conveyor where each ore lump gets a true dual-energy X-ray ratio, a noisy sensor… External Ballistics Simulator 2D: Drag & CrosswindNew📱2D side-view companion to the 3D artillery range: the same semi-implicit drag-coupled… Trajectory Calculation Simulator (2D)New📱2D ballistic-arc plotter: step the same drag-and-crosswind flight equations as the 3D… Asteroid Deflection: Kinetic Impactor vs Gravity Tractor Trade Study (2D)New📱2D mission-planning lab: pick asteroid diameter, warning time and spacecraft mass, then… Butterfly Flight: Flapping-Wing Lift Model (2D)New📱A 2D flapping-wing flight lab: lift and thrust are derived every frame from the wing's own… Carnival Ferris Wheel (2D): Centripetal Force & Apparent WeightNew📱2D Ferris-wheel lab: a real pendulum-with-accelerating-pivot model swings each gondola,… Chladni Plate: Standing-Wave Sand Patterns (2D)New📱2D top-down Chladni-figure lab: sand grains descend the gradient of a standing-wave field… Crystal Lattice Phonons (2D)New📱A 2D grid of masses and springs, numerically integrated frame by frame, revealing a… Design Roller Coaster Tracks (2D)New📱2D roller-coaster track designer built on real energy-conservation physics: shape the first… Elastic Collisions — 2D Billiards & Maxwell-Boltzmann (2D)New📱2D canvas companion: N frictionless discs colliding elastically, with a live speed histogram… Bouncing Bodies: Elastic Collisions & Energy Conservation (2D)New📱A box of unequal-mass bodies bouncing under gravity and linear air drag, colliding… Germanium Recovery: Hydrometallurgical Process Lab (2D)New📱2D flowsheet model of germanium recovery from zinc-plant residues: Arrhenius leaching… Glass Shatter Fragments (2D)New📱A 2D glass pane shatters from a click point: polar-triangulated shards radiate outward with… Gravity Wells (2D): Multi-Body Potential FieldNew📱A 2D gravity-wells lab: drag well count, particle count and the gravitational constant, and… Helium Arc Discharge: Buoyancy-Driven Arc Bowing (2D)New📱2D helium arc-discharge lab: a Verlet-integrated plasma rope bows upward under buoyant lift… Hot Air Balloon: Buoyancy & Thermodynamics Lab (2D)New📱A real Archimedes-principle hot air balloon: hold the burner to heat the envelope, watch the… Iceberg Floating Physics (2D)New📱2D Archimedes'-principle lab: adjustable ice and water density sliders binary-search a… Induced Polarization Chargeability Survey (2D)New📱Sweep a Wenner electrode array over a buried chargeable body and watch apparent resistivity,… Real-Time Sync Engine: Latency & Conflict Resolution (2D)New📱2D collaborative-sync lab: adjustable network latency, packet loss and edit rate drive a… Mine Gas Monitoring Simulation (2D)New📱Interactive 2D mine-ventilation lab: an advection-diffusion model tracks methane spreading… Mössbauer Effect: Doppler Resonance Scan (2D)New📱2D companion to the 3D Mössbauer Effect Lab: choose a binding mode and lattice temperature… Steampunk Gear Mesh: Friction, Heat & Efficiency (2D)New📱2D companion to N63 Steampunk Gears: real involute-mesh specific-sliding and Hertzian… Ocean Waves: Wind Spectrum & Shoaling (2D)New📱2D linear-wave-theory ocean model: a Pierson-Moskowitz-style wind spectrum sums real… Pendulum Wave (2D) — N Independent Pendulums Forming a Traveling WaveNew📱2D canvas pendulum-wave lab: N independent small-angle pendulums with lengths tuned so their… Black Hole Lensing Lab (2D)New📱2D Schwarzschild lensing lab: real geodesic ODEs bend a fan of light rays and drive a… Pulsar Magnetosphere Dynamics (2D)New📱2D lighthouse-model pulsar lab: a tilted rotating magnetic dipole sweeps two radio beams… The Purcell Effect (2D): Cavity Density of StatesNew📱A 2D Purcell-effect lab: drag the cavity quality factor, mode volume and detuning and watch… BB84 Quantum Key Distribution: Photons, Eavesdropping & Latency (2D)New📱2D BB84 quantum-key-distribution lab: polarized photons travel from Alice to Bob over a… Quokka Population Dynamics (2D)New📱A 2D logistic-growth population model for Rottnest Island's predator-free quokka colony:… Northstar Ferry — 2D Helm SimulatorNew📱Steer the Northstar Ferry from a top-down helm view: throttle, rudder and deck-balance… Rhenium Roaster Offgas: Volatilization & Scrubber Capture (2D)New📱2D rhenium-recovery lab: model Re2O7 volatilization from molybdenite roasting off-gas… Soap Bubble Thin-Film Interference (2D)New📱2D soap-bubble lab: adjustable film thickness, soap concentration, gravity and radius drive… Spider Web Construction Physics (2D)New📱2D orb-weaver build sequence: frame, radial spokes and an outward capture spiral traced with… Spin Glass Lattice: Bond Disorder & Metropolis Relaxation (2D)New📱2D Canvas Edwards-Anderson spin-glass lab: drag the bond-disorder probability from pure… Spinodal Decomposition: Composition Field Map (2D)New📱2D companion to the 3D Cahn-Hilliard spinodal decomposition simulator: quench a binary… Strategic Chess Battle Simulation (2D)New📱2D companion to the 3D chess demo: replaces its scripted, looping piece animation with a… Tidal Turbine Array: Actuator-Disc Power & Wake Model (2D)New📱2D companion to the Tidal Power 3D scene: a real actuator-disc power law (P = 0.5·ρ·A·Cp·v³)… Tug of War Physics Simulator (2D)New📱Top-down 2D companion to the 3D tug-of-war simulator: the same static/kinetic-friction… Volcano Magma Chamber & Conduit Dynamics (2D)New📱2D volcano lab: Hagen-Poiseuille conduit discharge, Taylor-bubble gas-slug bursts, a… Water Wave Propagation: 2D Ripple Tank (FDTD)New📱A 2D companion to the 3D shader-based water ripple scene: a genuine finite-difference (FDTD)… Worm Garden Foraging Lab: Correlated Random Walk & Search Theory (2D)New📱2D top-down foraging lab: worms perform an active-Brownian correlated random walk hunting… 3D Power System CircuitNewA genuine 3D single-line power-system circuit: a generator feeds three parallel loads… 3D Physiology Simulator — Volumetric Organ SystemsNewCirculatory, respiratory, nervous, digestive and endocrine systems modeled as… Algorithmic Bias & Fairness Metrics — 3DNewA real-time 3D companion to the algorithmic bias & fairness metrics simulator: the same… Impasto Relief Drawing: 3D Ink & GravityNewPaint on a freely orbit-able 3D easel where every stroke is extruded into a real relief… Atwood Machine — Pulley Tension & Acceleration (3D)NewA real 3D Atwood machine: two masses hang from a string over a pulley with adjustable moment… 3D CVSS Attack Chain VisualizerNewA real WebGL exploit chain: watch an attack travel from an attacker node through privilege… Double Pendulum in 3D — Spherical ChaosNew📱3D companion to the classic 2D double pendulum: instead of two angles confined to one plane,… Electric Field Visualization Tool (3D)New📱Place positive and negative point charges anywhere in 3D space and watch real Coulomb-law… 3D Biodiversity Monitoring — Trophic Ecosystem SimulatorNewA genuine 3D three-trophic-level Lotka-Volterra food-chain simulation: producers, herbivores… 3D DCF Financial ModelNew📱A real discounted-cash-flow model rendered in 3D: adjust revenue growth, operating margin,… 3D Gravitational Particle FieldNewHundreds of particles orbit massive stars under real inverse-square Newtonian gravity,… Employee Relations Network — 3DNewA 3D organization graph where morale spreads through relationships via graph-Laplacian… Ecosystem Population Dynamics (3D)NewFull 3D ecosystem model: logistic producer growth coupled to a Lotka-Volterra-style… Market Equilibrium Space (3D)New📱A genuine 3D companion to Market Simulation: Supply, Demand & Economic Shifts — a real… Music Sound Design Simulation (3D)NewA real Web Audio synthesizer — oscillator, biquad filter, feedback delay line and an… 3D Nanotechnology Simulation: ScaleNew📱A 3D nanoscale laboratory: nanoparticles undergo real Brownian motion in three dimensions,… Phyllotaxis 3D: Golden-Angle Growth SpiralNewGrow a real three-dimensional phyllotaxis structure — a sunflower-style capitulum or a… 3D Political Opinion Dynamics — Persuasion & Social NormsNewA 3D bounded-confidence opinion-dynamics model: agents drift through space, persuade nearby… 3D Projectile Motion & Elastic Collision SimulatorNewLaunch a projectile along a real 3D parabolic trajectory under adjustable gravity, aim it at… Quantum Mechanics Simulator — Wave Functions (3D)NewA real-time 3D companion to the quantum mechanics wave-function simulator: the same… 3D Safety Incident Response SimulationNew📱A genuine 3D hazmat incident-response model: a Gaussian dispersion plume grows from a leak… 3D Security Awareness Vigilance HaloNew📱Orbit a real Three.js vigilance halo running the exact same… Social Structure Network (3D)NewA real 3D force-directed social network replacing the 2D original's single orbiting dot:… Therapy Response Landscape: 3DNew📱A genuine 3D treatment-response surface: symptom severity plotted against support level and… 3D Ballistics — Projectile Motion in Real 3D SpaceNew📱3D companion to the 2D ballistics simulator: the exact x(t)=v0cos(θ)t, y(t)=v0sin(θ)t-½gt²… Omnipresent Energy Field: 3D Wave SuperpositionNewWatch ambient field energy fill a 3D volume of space as multiple point sources emit… 3D Wireframe Engine: Live-Tessellated Solids in WebGLNewReal WebGL companion to the 2D canvas wireframe engine: orbit a genuine Three.js cube,… Suspension Bridge Sway: Vortex-Shedding Resonance (2D)New📱2D companion to the 3D suspension-bridge sim: an RK4-integrated forced-damped torsional… 3D Neural Cognition Network SimulationNew📱A spherical network of 100 spiking neurons rendered in real 3D — each neuron sums 10% of its… Pyramid Ramp Physics: Sledge Friction & Wetted Sand (2D)New📱2D sledge-hauling lab computing the real Amontons–Coulomb pulling force needed to drag a… Bloch Oscillations: Electron on a Band (2D)New📱2D Bloch-oscillation lab: a semiclassical electron on a tight-binding band E(k)=-2J cos(ka),… Click Beetle Flip: Latch-Spring Elastic Energy Release (2D)New📱2D side-view model of a click beetle's latch-mediated spring actuation: a real elastic… Comet Gravity Assist (2D)New📱A 2D gravity-assist lab: the comet is placed directly on the exact Newtonian hyperbolic… DSMC Rarefied Gas Flow: 2D Kinetic-Theory Particle LabNew📱2D Direct Simulation Monte Carlo (DSMC) lab: ballistic particles binned into cells,… Frisbee Flight: Lift, Gyroscopic Precession & Spin Decay (2D)New📱2D side-view frisbee flight lab: real angle-of-attack lift/drag, gyroscopic precession that… Gravitational Integrators: Symplectic vs Euler Energy Drift (2D)New📱2D n-body lab that runs the same gravitational system through three real integrators at once… Heart Beating Blood Flow (2D)New📱2D companion to the 3D beating heart: a real time-varying-elastance ventricle with… Space Crop Life-Support Balance Lab (2D)New📱2D bioregenerative life-support lab with a Michaelis-Menten light-response photosynthesis… Marble Trajectory Analysis Tool (2D)New📱2D projectile lab with RK4-integrated gravity-plus-quadratic-drag equations of motion, a… 2D Particle Detector: Track Curvature & Particle IDNew📱2D collider-detector cross-section: real Lorentz-force track curvature r = p/(0.3·q·B),… Particle-in-a-Box: Pauli Filling of Energy Levels (2D)New📱2D companion to the Pauli exclusion lab: a real particle-in-a-box energy ladder (E_n =… Percolation — Clusters & Critical Threshold (2D)New📱2D percolation lab with an N×N grid, path-compressed union-find clustering, a virtual… Placer Gold Panning: Density Separation (2D)New📱2D sluice-box lab: per-grain Stokes-drag physics separates gold from sand by specific… Pond Ripples & Reflection (2D)New📱2D ripple-tank lab: a real finite-difference 2D wave equation solver with adjustable wave… Roller Coaster Energy Transfer (2D)New📱Interactive 2D roller-coaster energy lab: pick a track shape, drag start height, friction,… Roller Coaster G-Force Lab (2D)New📱2D roller-coaster rider-experience lab with exact analytic track curvature, a live… Sand Helix — 2D Angle-of-Repose Pile SimulatorNew📱2D companion to Sand Helix: a discrete granular-pile model where sand grains fall from an… STM Topographic Imaging Lab: Constant-Current vs Constant-Height (2D)New📱2D STM raster-imaging lab: reciprocal-lattice cosine-sum surface synthesis, an analytic… Snowball Hill: Accretion-Coupled Rolling Growth (2D)New📱2D rolling-accretion lab with a real dm/dt-coupled ODE system — snow pickup, growing moment… Static vs Kinetic Friction Incline Lab (2D)New📱2D side-view friction lab: adjust incline angle, static/kinetic coefficients and block mass… 2D Pendulum-Wave Resonance Dashboard: Exact Return-Time MathNew📱2D pendulum-wave lab focused on the exact resonance-return-time math: N independently… Tin Cassiterite Shaking Table (2D)New📱Top-down 2D Wilfley-type shaking table: differential riffle creep versus cross-flowing wash… Tsunami Travel-Time & Wavefront Map (2D)New📱2D tsunami lab: a fast-sweeping eikonal solver computes real travel time across a bathymetry… Ice Crystal Formation: Diffusion-Limited Hexagonal Growth (2D)New📱2D snow-crystal lab: a Reiter-style cellular automaton on a hexagonal lattice grows a frozen… Wave Interference Ripple Tank (2D)New📱2D top-down ripple tank with real per-pixel wave superposition from 2-5 point sources,… Cloth Simulation (2D)New📱A 2D mass-spring cloth mesh with structural, shear and bend springs, relaxed with Verlet… Archery Range SimulatorNew📱2D side-view archery trajectory simulator that traces an arrow's parabolic flight from draw… Ball Lightning: Plasma Soliton Simulator (2D)New📱Watch a turbulent glowing plasma sphere drift, spark and discharge in this 2D ball lightning… Binary Star SystemNew📱A 2D top-down companion: a real velocity-Verlet two-body gravity integration traces each… Butterfly Migration Relay (2D)New📱A top-down map of the monarch flyway where a population streams continuously from the… Centripetal ForceNew📱A 2D top-down companion: a ball whirls on a string at radius r and angular velocity omega… City Traffic Intersection — Car-Following & Signal Timing (2D)New📱Top-down 2D traffic intersection driven by a real car-following (IDM) model, so queues build… Candle Flame Simulator (2D)New📱Interactive 2D candle with a live wax-melt, flicker and flame-height model driven by wick… Cosmic Distance Ladder 2D: Parallax, Cepheids & RedshiftNew📱2D cosmic distance ladder where a single distance-scale slider hands off between… Cloud Chamber Simulator (2D)New📱Interactive 2D Wilson cloud chamber: alpha, beta and cosmic-muon particles leave… Comet Orbit (2D)New📱A top-down 2D companion to the 3D comet orbit simulator: an adjustable-eccentricity Kepler… Champagne Bubbles Simulator (2D)New📱A 2D cross-section of a champagne flute where CO2-saturation and temperature sliders drive… Chladni Plate CymaticsNew📱A top-down 2D view of a vibrating Chladni plate where sand grains drift along the… Blackbody Radiation (2D)New📱A 2D companion to the 3D blackbody demo: drag the temperature slider and watch a live Planck… Buoyancy TankNew📱A 2D side-view companion: sliders set object density, object volume and fluid density, and… Digestive System Simulator (2D)New📱Interactive 2D side-view digestive system: a peristaltic wave carries a food bolus from… Observatory Platform: Telescope Aperture & ExposureNew📱Point a telescope reticle at a 2D altitude-azimuth sky chart of magnitude-graded stars, a… 2D Cloth Hanging Under GravityNew📱A 2D mass-spring cloth grid that hangs under gravity, ripples in adjustable wind, and tears… Fireworks Simulator (2D)New📱Launch a firework shell with real projectile physics and watch it burst into particle-trail… Magnetic Field Lines Simulator (2D)New📱Interactive 2D bar-magnet dipole simulator: drag the magnet, flip its poles, and watch field… Hooke's Law & Elastic Limit (2D Spring-Mass)New📱A 2D side-view spring-mass simulator: pull a hanging mass to trace a real force-extension… Javelin Throw Aerodynamics (2D)New📱A 2D side-view javelin throw simulator where release angle, initial angle of attack and… 2D Mentos & Cola EruptionNew📱A 2D side-view Mentos-and-cola eruption simulator: watch CO2 bubbles nucleate on the rough,… Microwave Standing Wave Map (2D)New📱A top-down 2D map of the standing electromagnetic wave inside a microwave cavity, showing… Molecular Diffusion of Gases (2D)New📱Interactive 2D random-walk simulation of two gas species diffusing across a removable… Magnetic Levitation Simulator (2D)New📱2D side-view force-balance simulator: a permanent-magnet track passively levitates a puck… Mechanical Clock Escapement Simulator (2D)New📱A 2D pendulum-driven escapement and gear train where changing the pendulum length off its… Osmosis & Diffusion Simulator (2D)New📱Two compartments of solute-laden water separated by a semipermeable membrane in… Photoelectric Effect Simulator (2D)New📱Interactive 2D photoelectric-effect simulator: shine light of adjustable frequency and… Piano Note Visualizer (2D)New📱Watch a looping melody play itself across a flat piano keyboard while glowing note bars rise… Piezoelectric Effect Simulator (2D)New📱2D cross-section of a piezoelectric crystal lattice: squeeze it to displace the positive and… Pulley System Simulator (2D)New📱Interactive 2D block-and-tackle: combine fixed and movable pulleys, pull the rope with an… Pulsar Neutron Star 2D: Lighthouse Beam SweepNew📱2D side-view lighthouse model of a pulsar: a rotating neutron star with a misaligned… 2D Respiratory System: Diaphragm, Boyle's Law & Gas ExchangeNew📱2D cross-section simulator of breathing: diaphragm contraction expands the thorax, Boyle's… Saturn's Rings: Roche Limit & Orbital Velocity (2D)New📱Top-down/cross-section 2D view of Saturn's rings with adjustable viewing angle and particle… 2D Shock Absorber Simulator (Damper + Spring)New📱Interactive 2D piston-in-cylinder shock absorber: tune spring stiffness and damping… Skin Thermoregulation Simulator (2D)New📱2D cross-section of human skin showing thermoregulation in action: vasodilation and sweating… Sky Lanterns Buoyancy Simulator (2D)New📱Light a paper sky lantern and watch real buoyancy physics decide whether it lifts off:… Slinky Drop Simulator (2D)New📱A 2D chain of coupled masses and springs shows why a dropped slinky's bottom coil stays… Snow Avalanche SlopeNew📱Tune slope angle, snowpack depth and weak-layer stability to see when shear stress… Snow Globe Settling Simulator (2D)New📱Shake a 2D snow globe cross-section and watch each flake settle through the viscous liquid… Soda Bubbles Simulator (2D)New📱Interactive 2D carbonated-soda simulator: CO2 supersaturation drives bubble nucleation at… 2D Rocket Ascent: Tsiolkovsky Δv & Loss BudgetNew2D rocket-ascent simulator built on real physics: propellant mass depletion,… Tsunami Shallow-Water Cross-Section (2D)NewA 2D side-on cross-section that follows one tsunami wavefront across a deep-ocean, shelf and… Candle Flame & Wick Char (2D)New📱Interactive 2D candle driven by procedural convective-airflow noise: the flame sways and… Standing Waves in an Air Column (2D)New📱A 2D longitudinal-wave simulator of standing sound waves in a resonating air column: switch… String Lights Catenary Sag (2D)New📱A real catenary y = a·cosh(x/a) drapes a string of light bulbs between two posts in flat… Submarine Ballast & BuoyancyNew📱A 2D side-view companion: drag the main ballast slider and a real Archimedes buoyancy… Spider Web Tension Map (2D)NewA 2D mass-spring orb web solved with Verlet integration: drag a weight anywhere on the silk… Space Colony Population Dynamics (2D)NewInteractive 2D closed-loop space colony simulation: population growth is logistic-limited by… Tidal Forces: Two Bulges & Spring/Neap Tides (2D)New📱Interactive 2D tidal-force simulator computed from an exact per-point differential-gravity… Tunnel Support Failure: Arching Stress Simulator (2D)New📱Interactive 2D tunnel cross-section: overburden weight is redistributed sideways around the… Celestite Gravity Separation (2D)NewA 2D jig-separator lab: pulsating water strokes a bed of dense celestite (SrSO4) and lighter… Aluminothermic Ferroniobium Reduction (2D)New📱2D energy-balance model of aluminothermic ferroniobium smelting: aluminum-excess and… Wireline Cable Tension Simulator: Diamond Core Retrieval (2D)New📱Interactive 2D wireline coring cross-section: drill a diamond core run, then haul the full… Rare Earth Magnetic Separation — Induced-Roll Drum (2D)New📱A 2D companion to the 3D rare-earth magnetic separator: an induced-roll drum spins under a… Laser Cavity Threshold Lab (2D)New2D laser rate-equation lab: pump a gain medium between two mirrors, tune reflectivity and… The Barkhausen Effect: Avalanche Hysteresis Loop (2D)NewA flat lattice of magnetic domains driven by a random-field Ising model: each site carries… Pilot-Wave Double-Slit: Walking Droplets (2D)New2D hydrodynamic pilot-wave double-slit lab (Couder-Fort walking droplets, not photons): each… Ice Sheet Fracture: Crack Propagation Lab (2D)NewA 2D companion to the 3D Ice Fracture simulator built on real fracture-mechanics rules: each… Mica Basal Cleavage — Interlayer Peeling (2D)New📱A 2D companion to the 3D mica sorter, showing why mica splits at all: a cross-section of… 2D SPH FluidNew📱A 2D side-view companion to the 3D SPH Fluid tank: the same Muller-2003… Cloth Simulation (2D): Mass-Spring Tear & Wind LabNew📱A 2D side-view companion to the 3D Spring-Mass Cloth Simulation: a real mass-spring-damper… Car Physics (2D)New📱A 2D top-down companion to the 3D Car Physics simulator: drive a car built on a real… 2D Sand AutomatonNew📱A 2D falling-sand cellular automaton: sand, water, wood, fire, stone and wall cells each… Bubbles (2D)New📱A 2D bubble-physics sandbox: real Archimedes buoyancy with fluid added-mass inertia,… 2D Fireworks: Real Projectile & Burst PhysicsNew📱A 2D companion to the 3D fireworks particle system: click to launch a shell whose upward… Domino Chain — 2D Rigid-Body Toppling Physics (2D)New📱A real 2D side-view companion to the 3D Domino Chain simulator: each tile pivots about its… Atmospheric Optics (2D)New📱A 2D atmospheric-optics lab: real Rayleigh scattering (intensity proportional to… 2D Pendulum Wave — Numerically Integrated Pendulum RowNew📱2D side-view pendulum-wave apparatus: a row of simple pendulums with real, precisely… 2D Spring-Mass NetworkNew📱Build your own 2D spring-mass network: click to add masses, drag between two masses to… 2D Particle Diffusion: Random Walk & Fick's LawNew📱2D particle diffusion simulation with a real Brownian random walk, optional hard-disk… 2D Electric Field SimulatorNew📱A flat 2D electrostatics sandbox: place positive and negative point charges, trace real… Sonic Boom & Mach Cone Simulator (2D)New📱Interactive 2D sonic boom simulator: fly a source through subsonic, transonic and supersonic… States of Matter Phase Diagram (2D)New📱A 2D companion to the 3D phase-diagram demo: drag a point across water's actual… Sundial (2D)NewA 2D horizontal sundial where sliders set latitude, clock time and day of year: watch the… 22° Sun Halo — Ice Crystal Refraction (2D)NewInteractive 2D geometric-optics model of the 22° and 46° sun halo: drag the incidence angle… Star Lifecycle: Mass-Driven Evolution & HR DiagramNew📱A 2D companion: drag a star's mass from 0.1 to 60 solar masses and watch it walk its true… 2D Torque Balance SimulatorNew📱An interactive 2D lever: drag three weights along a pivoted beam and watch it rotate toward… Tuned Mass Damper (2D)NewA 2D companion: a skyscraper modeled as a driven damped oscillator sways under periodic… 5G Network: Massive MIMO Beamforming (2D)New2D companion to the 3D 5G beamforming simulator: steer a real massive-MIMO array-factor… Abyssal Ocean Ecosystem: Chemosynthetic Food Web (2D)NewInteractive 2D hadal-zone food web: chemosynthetic bacteria fed by H2S/methane (no sunlight… Yo-Yo Physics 2D: String-Unwinding Rotational DynamicsNew📱Interactive 2D yo-yo simulator with real coupled linear/rotational dynamics: a =… Wind Instrument Acoustics (2D)NewPick a cylindrical (clarinet-style) or conical (oboe-style) bore, toggle six tone holes to… 2D Wind TunnelNew📱A 2D top-down companion to the 3D wind tunnel: streamlines bend around a selectable obstacle… Zen Fountain: Shishi-Odoshi Tipping-Bucket Simulator (2D)New📱Watch a pivoted bamboo tube fill from a steady drip, tip once its torque balance crosses… Zen Garden 2D: Sand Raking & Rock-Deflection SimulatorNew📱2D top-down companion to the 3D zen garden: drag to rake a grid-based sand height-field that… Zipper Mechanism: Slider Wedge & Cam (2D)NewA flattened, top-down 2D model of a zipper slider: drag the pull tab (or the range slider)… Acoustic Chamber (2D)NewFire a sound pulse in a top-down 2D room, watch each ray reflect off the walls (angle-in =… Acoustic Sonar Mapping (2D)New📱Sweep a survey vessel across a hidden seafloor and watch a multibeam sonar build a real… Active Matter: MIPS (2D): Self-Propelled Particles & Crowding-Induced ClusteringNew📱Self-propelled disks that slow down when crowded — a purely repulsive, non-aligning rule —… Active Sonar Simulator (2D)NewFire an active sonar ping and watch its circular wavefront expand at 1500 m/s through water,… Adiabatic Piston Compression (2D)New📱Drive a piston into a sealed gas cylinder and watch pressure and temperature follow P·V^γ =… Aerial Wildfire Containment (2D)New📱Interactive 2D top-down wildfire containment simulator: a wind-driven cellular-automaton… Aerodynamic Leaf Descent Simulator (2D)NewInteractive 2D side-view simulator of a falling leaf: a tilt-driven aerodynamic feedback… Locard's Exchange Principle: 2D Trace Evidence Transfer SimulatorNew📱Interactive 2D simulator of Locard's Exchange Principle: press a recipient surface onto a… Force Composer 2D — Superposition of Forces on a BodyNew📱Switch gravity, a Hooke's-law spring, viscous drag and a constant thrust on and off… Long-Lived Particle Displaced Vertex Search (2D)New📱Interactive 2D collider-detector simulator: beyond-Standard-Model long-lived particles are… Swing Pumping: Parametric Resonance Lab (2D)New📱A 2D theoretical-mechanics simulator of a playground swing as a pendulum with time-varying… Integrator Race 2D: Euler vs Verlet vs RK4New📱Four identical bodies orbit the same gravity well, each stepped by a different numerical… Noether's Theorem: 2D Phase-Space ConservationNew📱Pan and zoom a top-down potential heat-map as a particle orbits an anisotropic well, watch… Tip vs Slide: Block on an Incline (2D)New📱A 2D side-view rigid-body simulator: tilt a block on a ramp and watch whether it slides or… Haunted Pendulum WaveNew📱Interactive 2D side-view pendulum-wave demonstration — a row of pendulums with slightly… Haunted Pendulum WaveNew📱Interactive 3D pendulum-wave demonstration — a row of pendulums with slightly different real… Acoustic Levitation: The Floating SkullNew📱2D side-view of the same real standing-wave acoustic trap: a live pressure heat-map and…