Learn the Science
Deep dives into physics, chemistry, biology, and mathematics — written to make the equations click.
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Why Do Spinning Balls Curve? The Magnus Effect Explained
Why does a football bend around the wall and a cricket ball swing? The Magnus effect explained simply, with a free interactive simulator to bend the ball yourself.
What Is the Three-Body Problem? The Physics Behind the Netflix Series
What is the three-body problem? Learn why two orbiting bodies are solvable, why three become chaotic, and how it launched chaos theory — with an interactive simulation.
How Magnetic Fields Work: A Visual Guide with Free Interactive Simulations
Understand magnetic field lines, poles, and how bar magnets attract and repel — explained visually. Explore it hands-on with a free online magnetic field simulation.
Subnetting Explained Visually + Free IPv4 Calculator
Understand IP subnetting, CIDR notation, and subnet masks the visual way. Learn how the 32 bits split into network and host — then try a free interactive subnet calculator.
Wave Optics in Your Browser: Interference, Diffraction, and Snell's Law
From bending light through a prism to ripple tank interference patterns, explore wave and geometric optics through free interactive simulations on SciFunLab.
The Physics Behind Superheroes: 7 Interactive Simulations That Make the Science Real
Explore the real physics hiding inside superhero powers — from Spider-Man's impulse calculations to the Flash's relativistic mass — through 7 interactive simulations on SciFunLab.
Special Relativity Simulations: Time Dilation in Your Browser
Six interactive simulations — special relativity, relativistic mechanics, quantum double-slit, quantum tunneling, and nuclear decay — that build the visual intuition no textbook equation alone can give you.
Simple Harmonic Motion Simulation: Five Labs That Build Real Intuition
Explore simple harmonic motion through five interactive simulations — pendulum, spring-mass, damped oscillation, standing waves, and wave on string — with key parameters and real-world connections.
29 Physics Games You Can Play in Your Browser Right Now
SciFunLab now has 29 free interactive physics games — from pendulum labs and lunar landers to black hole explorers. Play them all without installing anything.
Thin Lenses, Ray Tracing, and Prisms: Free Online Optics Simulations
Interactive optics simulations covering the thin lens equation, Snell's law, Fresnel reflection, total internal reflection, and additive color mixing — all free in your browser on SciFunLab.
Nuclear Physics in Your Browser: Fission, Decay, and Rutherford Scattering
Explore chain reactions, radioactive decay curves, and Rutherford's famous gold foil experiment through free interactive simulations — no lab required.
Newton's Laws Simulation: Explore Force, Motion, and Momentum Online
Run Newton's laws simulations in your browser — Newton's Cradle, Collision Lab, Projectile Motion, and more. Free interactive mechanics for AP Physics, JEE, NEET, and IGCSE students.
Natural Selection Simulation Online: Evolution, Genetics, and Population Dynamics
Explore natural selection, allele frequency drift, Hardy-Weinberg equilibrium, and ecosystem balance with free interactive biology simulations — no lab required.
Interactive Math Games Online: 6 Simulations That Make Abstract Concepts Click
From Mandelbrot fractals to Fourier transforms — free math visualizer tools at SciFunLab that turn confusing equations into things you can see and touch.
Build and Solve Circuits Online: Circuit Builder and Resistor Network Games
Two new interactive circuit simulators on SciFunLab: a drag-and-drop circuit builder with Kirchhoff's law solver, and a resistor network puzzle game with 8 levels including Wheatstone bridges.
Gravity and Space: From Newton's Cannon to Black Holes
Explore orbital mechanics, the inverse square law, Kepler's third law, and the extreme physics of black holes through five free interactive simulations on SciFunLab.
Free Engineering Simulations Online: 6 Interactive Labs
Six free engineering simulations — PID controllers, DC motors, bridge analysis, rocket engines, aerodynamics, and signal processing — running directly in your browser on SciFunLab.
Electric Circuit Simulator Online: Build, Test, and Understand Circuits in Your Browser
Five free virtual circuit labs on SciFunLab — Ohm's law simulation, circuit builder online, DC motor, electrochemistry, and resistor networks. No software, no signup.
DNA Simulation Online: Visualize Replication, Genetics, and Cell Division
Learn how DNA replication, genetics, Punnett squares, cell division, and protein synthesis work using free interactive biology simulations — no lab required.
Why Simulations Beat Textbooks for Science Learning
Interactive simulations create deeper, lasting understanding that static reading simply cannot match.
STEM Career Paths in 2025: What Students Should Know
A practical guide to the STEM career landscape — which fields are growing, what skills matter, and how to start building your path today.
Quantum Computing Explained Without the Math
What quantum computers actually are, what they can and cannot do, and why they matter — no equations required.
The Physics of Everyday Life: Bridges, Bikes, and Airplanes
The objects you encounter every day are masterclasses in applied physics — here is how to see them that way.
How We Built 240 Science Labs (And What We Learned)
The behind-the-scenes story of building SciFunLab's simulation platform — the technical choices, the dead ends, and the moments that made it worth it.
Virtual vs. Real Chemistry Labs: What Each Does Better
Virtual labs and physical labs each have genuine strengths — the best chemistry education uses both deliberately.
Wave Interference Simulator: See Constructive and Destructive Interference Online
Use a wave interference simulator to explore constructive interference, destructive interference, phase, wavelength, amplitude, and Young's double-slit pattern.
Projectile Motion Simulator Online: Range, Height & Angle
Use an online projectile motion simulator to see how launch angle, speed, gravity, and air resistance change range, height, and flight time.
Pendulum Simulator Online: See Simple Harmonic Motion Instead of Only Memorizing It
Use an online pendulum simulator to explore simple harmonic motion, period, damping, gravity, phase space, and energy with clear visual experiments.
Acid Base Titration Simulator: Learn pH Curves, Indicators, and Equivalence Points
Use an acid base titration simulator to explore pH curves, endpoints, equivalence points, indicators, and strong vs weak acid-base titrations.
50 New Interactive Science Simulations You Can Play With Free
SciFunLab just added 50 new free interactive simulations across physics, chemistry, biology, math, and computer science. Explore and learn by moving the sliders.
Welcome to SciFunLab: Learn Science by Playing With It
SciFunLab offers free, browser-based interactive science simulations for students, teachers, and the curious. Here's what we're building and what this blog is for.