Interactive laboratory // 69 published
Physics Simulations Online — Free Interactive Labs
69 published interactive physics simulations covering projectile motion, pendulums, circuits, waves, quantum mechanics, and more.
Acoustics & Sound Waves — Interactive Simulator
Explore standing waves, harmonics, Chladni patterns, and beat frequencies with this free online acoustics simulation. Adjust frequency, amplitude, and mode interactively.
Angular Momentum Simulator: The Spinning Skater Effect
Interactive conservation of angular momentum: pull a spinning skater's arms in and watch them whirl faster because L = Iω stays constant. See moment of inertia, spin rate, and rotational energy trade off.
Black Hole Simulator — Gravity & Spacetime
Simulate black hole physics online: gravitational lensing, accretion disk, Kerr frame-dragging, and photon sphere. Adjust mass and spin to launch particles and watch GR effects.
Brachistochrone Curve Simulator - Fastest Ramp
Interactive brachistochrone simulator: race a ball down a curved cycloid ramp vs a straight ramp and see why the curve wins. Tune gravity, drop, and distance live.
Buoyancy Simulator: Archimedes' Principle, Float or Sink?
Interactive buoyancy simulation: drop objects into water, oil, or mercury and watch them float or sink. See why the submerged fraction equals the density ratio ρobject/ρfluid — the tip of the iceberg.
Center of Mass Simulator: Balance Point Explained
Interactive center of mass simulator: drag weighted blocks on a bar, watch the balance point shift, and see the seesaw tilt or level in real time.
Chaos Theory Simulator — Lorenz & Double Pendulum
Explore chaos theory with this free online simulator: double pendulum butterfly effect, Lorenz attractor, logistic map bifurcation, and phase-space portraits. Interactive and visual.
Circuit Lab — Interactive Schematic & DC Simulator
Build and simulate DC circuits online with this free circuit lab. Place resistors, capacitors, LEDs, voltage sources, and more, then run nodal analysis to see voltage, current, and power.
Circular Motion Simulator: Centripetal Force & the Cut-String Test
Interactive circular motion simulation: whirl an object on a string, see the centripetal force F = mv²/r, then cut the string and watch it fly off along the tangent — not radially outward. Adjust radius, speed, and mass.
Collision Lab — Elastic & Inelastic Physics Simulator
Simulate elastic, inelastic, and perfectly inelastic collisions online. Choose presets like Newton's cradle or 2D collisions, adjust restitution, and track momentum conservation live.
Condensed Matter Physics Simulator — Phonons & Bands
Explore condensed matter physics online: phonon dispersion, electronic band structure, Meissner effect, and Ising model magnetism. Adjust temperature and band gap interactively.
Damped Oscillation Simulator: Spring-Mass Decay
Interactive damped oscillation simulator. Adjust spring stiffness, damping, and mass to see underdamped, critical, and overdamped decay live with the e^(-γt) envelope.
Doppler Effect Simulator — Sound, Shock Waves & Redshift
Visualize the Doppler effect, sonic boom, and cosmological redshift with this free online simulation. Adjust source speed and frequency to see wavefront compression and spectral shifts.
Doppler Lab — Sound & Light Shift Interactive Simulator
Explore the Doppler effect for sound and light in this free online lab. Move sources and observers, play audio of the shifted pitch, and observe shock waves and galactic redshift.
Elastic Collision Simulator: Momentum & Energy
Interactive elastic collision simulator. Set the mass and velocity of two balls, watch them collide, and see momentum and kinetic energy stay conserved in real time.
Electric Fields Simulator — Interactive Charges & Potential
Visualize electric fields, equipotential lines, and potential maps with this free online simulator. Place positive and negative charges and see field lines and vectors update instantly.
Electromagnetic Induction Simulator — Faraday & Lenz
Explore electromagnetic induction online: Faraday's law, Lenz's law, AC generators, and transformers. Adjust coil turns and field strength to see induced EMF and flux graphs in real time.
Electromagnetic Waves Simulator — E & B Field Visualization
Visualize electromagnetic waves with this free online simulator. See E and B field components, switch between linear and circular polarization, and explore dipole radiation patterns.
Energy Conservation Simulator: KE, PE & the Half-Pipe
Interactive energy conservation simulation: release a ball on a frictionless half-pipe and watch kinetic and potential energy trade off while the total stays constant. Add friction to see energy turn into heat.
Escape Velocity Simulator: Orbit or Escape Explained
Interactive escape velocity simulator: adjust launch speed and angle to watch a projectile fall back, orbit, or escape Earth, the Moon, or Jupiter.
Fluid Dynamics Simulator — Bernoulli & Venturi Effect
Simulate pipe flow with Bernoulli's principle, the Venturi effect, and Reynolds number. Compare water, oil, and honey while changing diameter and flow rate.
Gravity Lab — N-Body Orbital Mechanics Simulator
Simulate gravitational n-body systems online: Earth-Moon, Sun-Earth, inner planets, binary stars, and escape trajectories. Adjust mass and velocity and track orbital energy live.
Gravity Orbit Simulator — Kepler's Laws Interactive
Explore Kepler's laws with this free online gravity orbit simulator. Simulate circular orbits, elliptical orbits, two-planet systems, binary stars, and moon systems with velocity Verlet integration.
Gyroscope Precession Simulator: Why Spinning Tops Don't Fall
Interactive gyroscope precession simulator. Spin a tilted flywheel, adjust spin rate and gravity, and watch angular momentum make it circle instead of topple.
Heat Transfer Lab — Conduction, Convection & Radiation
Simulate all three modes of heat transfer online: conduction through composite walls, natural and forced convection, and thermal radiation with Meissner effect. Free interactive physics lab.
Hooke's Law Simulator: Springs, F = kx & Series vs Parallel
Interactive Hooke's law simulation: hang masses on a spring and watch it stretch by x = mg/k. See the force–extension line, elastic energy ½kx², and why springs in series are softer while parallel are stiffer.
Ideal Gas Law Simulator — PV, TV, PT Diagrams Interactive
Explore the ideal gas law with this free online simulator. Adjust pressure, volume, temperature, and moles for helium, nitrogen, and CO₂. Plot PV, TV, and PT diagrams in real time.
Impulse & Momentum Simulator: Crumple Zones & J = FΔt
Interactive impulse–momentum simulation: crash a mass into a rigid wall vs a crumple zone and watch the same momentum change spread over a longer time cut the peak force. See J = F·Δt = Δp in action.
Inclined Plane & Friction Simulator: Will the Block Slide?
Interactive inclined plane simulation: adjust the ramp angle, mass, and friction to see the force vectors and whether a block slides. Discover the critical angle arctan(μs), independent of mass and gravity.
Laser Optics Simulator — Optical Cavity & Gain Medium
Simulate laser operation online: optical cavity, stimulated emission, gain medium, and longitudinal modes. Adjust pump rate, wavelength, and cavity length for HeNe, Nd:YAG, and Ti:Sapphire presets.
Magnetic Field Simulation Online — Free Interactive Visualizer
Free magnetic field simulation online — visualize field lines, compass needle grids, and vector fields from draggable bar magnets. Adjust density, add multiple magnets, and explore dipole patterns interactively.
Magnus Effect Simulator: Why Spinning Balls Curve
Interactive Magnus effect simulator. Adjust spin, speed and air drag to bend a ball like a curveball or free kick and see the force that curves its path.
Newton's Cradle Simulator: Momentum & Energy
Interactive Newton's cradle simulator: lift 1-3 balls, adjust angle and damping, and watch momentum and energy transfer through a chain of swinging balls.
Newton's Second Law Simulator: F = ma, Force, Mass & Acceleration
Interactive F = ma simulation: push a cart against friction and watch the net force set its acceleration, with a live velocity–time graph whose slope is a. See how doubling force or mass changes the motion.
NMR Spectroscopy Simulator — Interactive Spectrum & FID
Explore a free NMR spectroscopy simulator with ¹H spectra, FID signals, and precessing spins. Compare four molecules at adjustable magnetic field strengths.
Nuclear Decay Simulator — Radioactive Decay Chains
Simulate radioactive decay online for C-14, U-238, Tc-99m, and Rn-222. Watch decay chains with alpha, beta, and gamma particles, and plot exponential decay curves in real time.
Optics Lab — Interactive Ray Tracing Sandbox
Build optical systems with lenses, mirrors, and prisms in this free online optics lab. Trace rays through convex and concave lenses, plane mirrors, prisms, and glass slabs with adjustable parameters.
Particle Physics Simulator — Collider & Detector Events
Simulate particle physics collision events online: pair production, annihilation, pion decay, and Z-boson resonance. Adjust beam energy and magnetic field to curve charged particle tracks.
Pascal's Principle Simulator: Hydraulic Press & Force Multiplication
Interactive hydraulic press simulation: a small force on a small piston lifts a heavy load on a big piston. See Pascal's principle F₂ = F₁·(A₂/A₁), the pressure, and why work is still conserved.
Pendulum Lab — Multi-Pendulum Simulator with RK4
Simulate up to 4 pendulums online with RK4 integration. Adjust length, mass, angle, damping, and coupling. Compare planets, view phase space and energy graphs. Free interactive pendulum simulator.
Pendulum Wave Simulator - Traveling Waves Explained
Interactive pendulum wave simulator: watch 15 pendulums of different lengths drift into snaking traveling waves and snap back in sync. Tune amplitude, speed & cycle.
Plasma Physics Simulator — Fusion & Confinement
Explore plasma physics online: toroidal magnetic confinement, Debye shielding, Lawson criterion, and MHD instabilities. Adjust density, temperature, and B field in this free plasma simulator.
Projectile Motion Simulator — Interactive Physics Lab
Launch a projectile with adjustable angle, speed, gravity, mass, and air resistance. Compare planets, target a landing point, and read live range and height data.
Pulley Systems Simulator: Mechanical Advantage & Block-and-Tackle
Interactive pulley simulation: add rope segments to a block-and-tackle and watch the effort force drop to W/n. Lift heavy loads with a small pull, and see why work is still conserved.
Quantum Double-Slit Experiment — Wave-Particle Duality
Run the quantum double-slit experiment online with photons, electrons, or neutrons. See interference patterns build statistically, toggle which-path detection, and explore wave-particle duality.
Quantum Entanglement Simulator — Bell States & CHSH Test
Explore quantum entanglement online: Bell states, CHSH inequality test, quantum teleportation protocol, and decoherence. Visualize Bloch spheres, correlations, and density matrices interactively.
Quantum Field Theory Simulator — Feynman Diagrams & Higgs
Explore quantum field theory concepts online: Feynman diagrams, vacuum polarization, Higgs mechanism, and renormalization of QED/QCD couplings. Interactive free QFT visualization.
Quantum Potential Well Simulator — Wavefunctions & Tunneling
Explore quantum wells online: infinite and finite potential wells, wavefunctions, energy levels, and tunneling transmission. Adjust well width, barrier height, and quantum number interactively.
Quantum Tunneling Simulator — Wave Mechanics & Transmission
Simulate quantum tunneling online with animated incident, evanescent, and transmitted waves. Adjust barrier height, width, and particle energy to see transmission and reflection coefficients update live.
Ray Tracing Optics Lab — Lenses, Mirrors & Prisms
Trace rays through convex and concave lenses, mirrors, and prisms. Drag optical elements, find real or virtual images, and watch white light disperse.
Refraction Lab — Snell's Law & Total Internal Reflection
Explore Snell's law and total internal reflection with this free online refraction simulator. Choose optical media, set the incident angle, and observe refraction, reflection intensity, and TIR with white light.
Relative Velocity Simulator: River Crossing & Boat Drift
Interactive relative velocity simulation: steer a boat across a flowing river and watch v_ground = v_boat + v_current carry it downstream. Aim upstream to cancel the drift and land straight across.
Relativistic Mechanics Simulator — Time Dilation & E=mc²
Explore relativistic mechanics online: time dilation, length contraction, relativistic momentum, and E=mc² energy. Adjust velocity (0–0.99c) and rest mass with interactive sliders.
Simple Harmonic Motion Lab — Mass-Spring Simulator
Simulate simple harmonic motion online: underdamped, critically damped, overdamped, and resonance. Adjust mass, spring constant, damping, and driving force. Export CSV data.
Solar System Simulator — Orbital Mechanics & Kepler's Laws
Explore the solar system online with accurate Keplerian orbits for all 8 planets and Pluto. Adjust simulation speed and zoom, click planets for orbital data, and verify Kepler's Third Law.
Special Relativity Simulator — Spacetime & Doppler
Explore special relativity online: time dilation, length contraction, Minkowski spacetime diagrams, and relativistic Doppler. Adjust velocity from 0 to 0.9999c with quick-set buttons.
Standing Waves Simulator: String Harmonics, Nodes
Interactive standing waves simulator for string harmonics. Adjust the harmonic, amplitude and speed to see nodes, antinodes and wavelength update live.
Statistical Mechanics Simulator — Maxwell-Boltzmann Distribution
Explore statistical mechanics online: Maxwell-Boltzmann speed distribution, Boltzmann factors, and quantum oscillator microstates. Adjust temperature, degrees of freedom, and mass interactively.
Stellar Lifecycle Simulator — Star Evolution & HR Diagram
Simulate stellar evolution online for stars from 0.1 to 100 solar masses. Watch phases from main sequence to red giant, supernova, neutron star, or black hole with a live HR diagram.
Superconductivity Simulator — Meissner Effect & Cooper Pairs
Explore superconductivity online: Meissner effect, Cooper pairs, Abrikosov vortex lattice, and resistance transition. Adjust temperature, B field, and critical temperature for Pb, YBCO, NbTi, and MgB₂.
Terminal Velocity Simulator: Falling Object & Air Drag
Free terminal velocity simulator. Drop a falling object, adjust mass and drag, and watch air resistance cap its speed. Interactive physics you can control.
Thermal Physics Simulator — Carnot Engine & Entropy
Explore thermal physics online: Carnot cycle on a PV diagram, heat conduction, entropy production, and Maxwell's demon. Adjust hot/cold reservoir temperatures and conductivity interactively.
Three-Body Problem Simulator — Chaos & the Figure-Eight Orbit
Explore the three-body problem in your browser. Compare a 0.001 nudge, the figure-eight orbit, the Pythagorean problem, and Trojan Lagrange points while watching chaotic trajectories diverge.
Torque & Balance Simulator: Seesaw, Moments & Levers
Interactive torque simulator: place weights on a beam and watch it tip or balance. See why m₁·d₁ = m₂·d₂ lets a small mass far out balance a heavy mass close in — the moment-arm idea behind seesaws, wrenches, and cranes.
Vector Addition Simulator: Drag Vectors, See the Resultant
Interactive vector addition: drag two vectors and watch the resultant update live using the tip-to-tail and parallelogram methods. See components, the angle between, and why |A+B| ≤ |A|+|B|.
Wave Interference Simulator — 2D Interference Patterns
Simulate 2D wave interference online with up to 8 sources. View displacement, intensity, or phase maps in real time. Adjust frequency, wavelength, phase, and amplitude per source.
Wave Optics Simulator — Diffraction, Thin Film & Polarization
Explore wave optics online: double-slit interference, diffraction grating, thin film iridescence, and Malus's law polarization. Adjust wavelength, slit separation, film thickness, and polarizer angle.
Wave Superposition Simulator — Standing Waves & Fourier
Explore wave superposition online: standing waves with boundary conditions, 2D interference patterns, beat frequency, and Fourier synthesis. Free interactive wave physics simulator.
Work & Power Simulator: W = Fd·cosθ and Why Carrying Does No Work
Interactive work and power simulation: push a box at an angle and see W = F·d·cosθ. Discover why a perpendicular force does zero work, when work is negative, and how power = work / time.
69 published simulations
69 published interactive physics simulations covering projectile motion, pendulums, circuits, waves, quantum mechanics, and more.