⚡ 物理与力学

SPH Fluid热门Fluid simulation via SPH: pressure, viscosity, gravity and wall bouncing. Splash impulse… Cloth SimulationPhysical cloth on a spring-mass model with wind and sphere collision. Drag points with mouse. Car PhysicsRealistic driving with suspension, drift, nitro and particle effects. Navigate rough terrain. Sand AutomatonSand, water, fire, wood, acid, smoke. Draw with mouse — watch substance reactions. Bubble WorldSoap bubbles simulation with surface tension, iridescent shading and collision physics. FireworksParticle-based fireworks with gravity, drag, colour trails and explosion physics. Domino ChainRigid body domino chain with Cannon-es physics. Wave propagation and energy transfer. Atmospheric OpticsFour scenes: Rayleigh sky scattering with sunset colours, rainbow arc physics, 22°… MechanismsInteractive kinematics: gear trains, crank-slider, chain drives and four-bar linkages.… Billiards PhysicsFull billiards table with elastic ball-ball collisions, topspin and backspin effects. Rack… Fracture SimulationVoronoi fracture of glass, concrete, ice, ceramic, metal and wood. Click to shatter at… BalloonsColourful helium balloons float upward. Click to pop with confetti. Pop mode, free float or… Magic Sand & SmokeDraw with the mouse to create sand, smoke, fire or water. Cellular automaton with gravity,… Molecular Dynamics2D Lennard-Jones molecular dynamics with Velocity-Verlet integrator and Berendsen… Ising Model2D Ising ferromagnet on a square lattice via Metropolis-Hastings Monte Carlo. Adjust… Fire & SmokeCellular automaton with fire, smoke, ember, ash, wood, water and wall cells. Wind direction,… Magnetic Field LinesInteractive magnetic field line visualizer. Place north and south poles on the canvas and… Pendulum WavePendulum wave machine simulation. Pendulums of different lengths synchronise into travelling… Spring-Mass NetworkInteractive spring-mass system with Verlet integration. Drag masses, adjust stiffness and… Particle DiffusionParticle diffusion and osmosis simulation. Watch Fick's second law in action as particles… Electric Field LinesInteractive electric field lines and equipotential surfaces from point charges. Add positive… Bridge DesignerInteractive truss bridge structural analysis using the finite element method. Choose Warren,… Driven ResonanceSweep the driving frequency of a damped mass-spring system and watch amplitude spike at… Crystal Structures — BCC, FCC, HCP, Diamond LatticesRotate BCC, FCC, HCP and diamond unit cells in 3D and compare their coordination numbers and… Lorenz AttractorExplore the iconic strange attractor and butterfly effect. Adjust σ, ρ, β and watch chaotic… Chain & Rope — Position-Based Dynamics SimulationSimulate flexible chains and ropes using position-based dynamics (PBD). Drag endpoints,… Drum Membrane Vibration — 2D Wave Equation & Chladni PatternsSimulate a vibrating circular drum membrane using the 2D wave equation. Visualise standing… Granular Materials — Sand Pile & Angle of ReposeSimulate granular materials: drop sand grains, watch the pile grow, measure angle of repose,… Ising Model — Phase Transitions and FerromagnetismInteractive 2D Ising model simulation using Metropolis-Hastings Monte Carlo. Watch… Maxwell's Wheel — Yo-Yo Energy ConservationDrop Maxwell's wheel and watch it unwind, bottom out, then climb back up as potential and… Parachute Physics — Terminal Velocity & DragSimulate parachute descent: freefall, canopy deployment, and terminal velocity. Control… Solid Body Fracture — Voronoi Impact SimulationSimulate fracture of brittle solids using Voronoi tessellation. Click or throw a projectile… String Vibration — Standing Waves and HarmonicsInteractive string vibration simulation. Pluck the string with the mouse or select harmonic… TsunamiNewTrigger a seafloor uplift and watch the wave spread across a shallow-water grid, racing… Z-PinchNewDrive megaamps through a plasma column and watch its own magnetic field squeeze it, until… CatenaryNewHang a chain between two points and see why a free cable settles into a catenary, with sag… Gyroscope PrecessionNewSpin a gyroscope, tilt it, and watch gravity produce steady precession plus a nutation… Viscoelastic FluidExplore rheology with Maxwell, Kelvin-Voigt and Standard Linear Solid models. Drag an… Projectile Motion — Range, Angle & Air ResistanceNewInteractive projectile motion simulator: vary launch angle, initial speed and drag… Maglev TrainNewMagnetic levitation: EDS (repulsive, speed-dependent) vs EMS (attractive, actively… Dzhanibekov EffectNew3D torque-free rigid-body rotation showing the intermediate axis theorem (tennis racket /… Projectile MotionNewFire a projectile and explore how launch angle, speed, air resistance, and gravity affect… Rope & Chain PhysicsNewA rope as point particles linked by distance constraints, integrated with Verlet and… Archimedes' PrincipleNewBuoyancy equals the weight of displaced fluid: F_b = ρ·V·g. Drop a cube, sphere or ship-hull… 3D Spherical PendulumNewA bob constrained to a sphere swings, traces rosette orbits, locks into perfect cones — and,… 2D Collisions — Momentum and EnergyNew2D elastic and inelastic ball collisions with conservation of momentum and energy. Adjust… Brachistochrone — Curve of Fastest DescentNewRace gravity beads down a line, arc, parabola and cycloid to watch the brachistochrone win.… Soap Film — Minimal Surfaces & Plateau's ProblemNewWatch a soap film relax into a minimal surface by iterating Laplace's equation ∇²h=0 — each… Abelian Sandpile — Self-Organised CriticalityNewDrop grains onto a grid: when a cell reaches 4 grains it topples, triggering avalanches with… Josephson Junction — AC & DC Josephson EffectsNewExplore DC and AC Josephson effects: a supercurrent tunnels through a thin insulating… Elastic Collisions — 2D Billiards & Maxwell-BoltzmannNewWatch N frictionless discs bounce with perfectly elastic collisions. Track total KE,… Optical Tweezers — Laser Trapping of ParticlesNewA tightly focused laser beam traps a dielectric bead via gradient force F~∇I. Drag the laser… Phase Transition — Order Parameter & Critical PointNewWatch the 2D Ising model undergo a phase transition at Tc ~ 2.27 J/kB: magnetisation drops… Granular Flow — Hopper Discharge & Arch FormationNewSand grains pour through a funnel orifice following Beverloo law Q ~ (D-kd)^2.5. Narrow the… Percolation — Clusters & Critical ThresholdNewFill a grid with open sites at probability p and identify connected clusters via union-find.… Plasma Oscillations — Langmuir WavesNewDisplace electrons in a neutral plasma: the restoring Coulomb force causes oscillation at… Topological Insulator — Bulk-Edge CorrespondenceNewThe SSH model with alternating hoppings t1, t2: tune across the topological boundary t2/t1=1… Spintronics — Spin Transport & GMR EffectNewGiant magnetoresistance (GMR): current through a ferromagnet/spacer/ferromagnet stack… Spin Glass — Frustration & Slow RelaxationNewRandom ferromagnetic and antiferromagnetic bonds create frustrated spin configurations with… Faraday Waves — Parametric Surface PatternsNewVibrate a fluid layer vertically: above a critical amplitude, standing surface waves appear… Quantum Hall Effect — Quantised ConductanceNewIn a strong magnetic field a 2D electron gas shows Hall conductance quantised in exact… Landau Levels — Electrons in a Magnetic FieldNewA charged particle in a magnetic field moves in circles; quantum mechanics quantises these… Compton Scattering — Photons as ParticlesNewA photon scattering off an electron loses energy, shifting its wavelength by Δλ = (h/m_e… Debye Model — Heat Capacity of SolidsNewTreating a solid's vibrations as a gas of phonons, the Debye model explains why heat… Debye Length — Plasma ShieldingNewVisualize Debye shielding in plasma. A test charge is surrounded by a screening cloud.… Topological Defects — Vortex DynamicsNewExplore vortex defects in a 2D XY model. Watch +1/2 and -1/2 disclinations attract and… Stochastic Resonance — Noise-Assisted DetectionNewSee how adding the right amount of noise to a weak signal can make it detectable in a… Granular Jamming — Packing Phase TransitionNewExplore the jamming transition: how random packing of hard discs transitions from fluid to… Bragg Diffraction — X-ray Crystal StructureNewSimulate Bragg diffraction: nλ = 2d·sin(θ). Rotate a crystal and watch… Spring Network — Random Elastic LatticeNewA 2D random spring network under load. Explore Maxwell criterion: below z_c ≈ 4 the network… Rarefied Gas — DSMC CollisionsNewDirect Simulation Monte Carlo (DSMC) for a rarefied gas. Particles stream and collide… Viscoelastic Wave PropagationNewWaves in a Maxwell viscoelastic medium. Below the crossover frequency ω_c = G/η they… Dark Matter Direct DetectionNewWIMP dark matter scatters off nuclei: recoil energy E_R = μ²v²(1−cos θ)/m_N.… Fermi-Pasta-Ulam RecurrenceA chain of nonlinear oscillators showing energy returning to mode 1 — the FPU recurrence… Granular Gas — Inelastic CollapseInelastically colliding discs cool via the Haff law and cluster — a granular gas simulation. Plasma Instability — Kelvin-HelmholtzTwo plasma layers of different velocity drive a shear Kelvin-Helmholtz instability with… Angular Momentum Conservation — Spinning SkaterNewWatch a spinning skater speed up and slow down as she pulls her arms in and out. Interactive… Atwood Machine — Pulley Tension & AccelerationNewSimulate an Atwood machine: two masses connected by a string over a pulley. Adjust m1, m2… Ballistic Pendulum — Measuring Velocity from Momentum & EnergyNewFire a bullet into a pendulum bob and watch momentum conservation in the collision followed… Centrifuge — Centripetal Force & G-ForceNewSpin a sample in a rotor and watch centripetal force and g-force scale with RPM and radius.… Crash Test — Impulse-Momentum TheoremNewCrash a vehicle into a barrier and see how impulse J = mΔv and stopping time/distance… Damped Harmonic Oscillator — Spring-Mass-DamperNewSimulate a damped spring-mass-damper system in real time. Adjust mass, stiffness and damping… Escape Velocity & Gravity WellsNewLaunch a projectile from the Moon, Earth or Jupiter and watch Newtonian gravity decide its… Static vs Kinetic Friction — Block on an InclineNewAdjust the incline angle, applied force, and static/kinetic friction coefficients to see… Rolling Motion — Sphere vs Cylinder vs Hoop on an InclineNewWatch a sphere, cylinder and hoop race down an incline. See how moment of inertia decides… Simple Pendulum — Small-Angle vs Large-Angle MotionNewCompare a real nonlinear pendulum (RK4-integrated θ'' = -(g/L)sinθ) against the small-angle… Terminal Velocity — Falling Body & DragNewDrop a feather, a ball or a skydiver and watch drag force grow until it balances gravity at… Torsion Pendulum — Angular OscillatorNewA disk suspended by a torsion wire twists back and forth like a rotational…