288 published interactive labs
Simulation Hub — Interactive Simulations
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288 simulations found
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.
Foundation · Under 10 minutesOpen simulation →physicsFluid 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.
Advanced · 20+ minutesOpen simulation →physicsGravity 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.
Intermediate · 10–20 minutesOpen simulation →physicsGravity 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.
Intermediate · 10–20 minutesOpen simulation →physicsThree-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.
Intermediate · 10–20 minutesOpen simulation →physicsHeat 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.
Intermediate · 10–20 minutesOpen simulation →physicsIdeal 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.
Intermediate · 10–20 minutesOpen simulation →physicsLaser 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.
Intermediate · 10–20 minutesOpen simulation →physicsMagnetic 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.
Intermediate · 10–20 minutesOpen simulation →physicsNMR 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.
Advanced · 20+ minutesOpen simulation →physicsNuclear 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.
Intermediate · 10–20 minutesOpen simulation →physicsOptics 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.
Intermediate · 10–20 minutesOpen simulation →physicsParticle 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.
Intermediate · 10–20 minutesOpen simulation →physicsPendulum 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.
Intermediate · 10–20 minutesOpen simulation →physicsPlasma 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.
Intermediate · 10–20 minutesOpen simulation →physicsProjectile 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.
Foundation · Under 10 minutesOpen simulation →physicsQuantum 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.
Advanced · 20+ minutesOpen simulation →physicsQuantum 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.
Advanced · 20+ minutesOpen simulation →physicsQuantum 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.
Advanced · 20+ minutesOpen simulation →physicsQuantum 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.
Advanced · 20+ minutesOpen simulation →physicsQuantum 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.
Advanced · 20+ minutesOpen simulation →physicsRay 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.
Intermediate · 10–20 minutesOpen simulation →physicsRefraction 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.
Intermediate · 10–20 minutesOpen simulation →physicsRelativistic 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.
Advanced · 20+ minutesOpen simulation →Learn science by changing the variables
SciFunLab turns equations into experiments. Compare a projectile motion simulation with the forces behind the Magnus effect, then investigate viscosity inside the fluid dynamics lab. Each page opens the working model directly, with no synthetic worksheet or course page between you and the experiment.
Advanced learners can trace light in the ray tracing lab, inspect atomic signals with NMR spectroscopy, model populations in the ecology simulation, or practise network design with the subnetting simulator.
Browse the engineering simulation collection, play browser physics games, or see how this catalogue compares as a PhET alternative for free interactive STEM exploration.