How did you learn the things you actually understand?
You experimented. You played. You asked "what happens if..." and then tried it yourself.
Some of our deepest understanding comes from exploration. We learn by observing, experimenting, making predictions, and discovering patterns.
FysikLab is built around that idea. Instead of static diagrams and long explanations, physical phenomena become interactive experiences that you can observe, manipulate, and investigate.
The goal isn't just to tell you how physics works, but to let you experience it.
Satellite orbiting Earth with Newtonian gravity. Adjust mass, see velocity & force vectors.
All 8 planets with real sizes, distances, elliptical orbits & Kepler's laws.
The 5 points where Sun-Earth gravity balances rotation. Explore the effective-potential landscape and find the saddles and peaks.
Newton's law F = GMm/r² in action. Release a test mass and watch it fall, orbit or escape depending on its initial speed.
Watch galaxies recede in every direction, turning red with distance. Click any galaxy to read its z and Hubble's law.
A block slides down a ramp with friction. Watch U → KE + Q and read off the efficiency η = 1 − μ/tanθ — energy conservation with heat included.
A crane lifts a crate at constant speed. P = F·v in real time, W = mgh fills the energy bar. Crank the speed up — same work, more power, less time.
See how a force at angle θ decomposes into Fx = F·cosθ and Fy = F·sinθ. Tilt the angle and watch the components rebalance live.
Explore Archimedes' principle with an interactive 3D simulation. Adjust object density and watch it float, sink, or reach neutral buoyancy in real time.
U = R·I in a closed circuit. The resistor literally narrows as R grows, and more electrons stream through as current rises.
Drag wires between component pins to build a closed circuit. Series and parallel topologies emerge from how you connect things. Live readouts show equivalent resistance, branch currents and power per component.
Spinning magnet induces EMF in a coil. Adjust windings and speed, see flux and voltage graphs.
One wave model for water, sound and light: transverse vs longitudinal, v = λ·f and the decibel, interference and resonance, reflection and refraction, and the Doppler effect.
Shine monochromatic light through a diffraction grating and watch d·sin θ = n·λ paint the maxima onto a screen. Tune λ, line density and screen distance to see the pattern fan out.
Watch wavefronts from N slits interfere in real time. Vary λ, slit count N and spacing d — see d·sinθ = n·λ produce the bright and dark fringes right in front of you.
Atomic structure, photons, the Bohr model, and emission/absorption spectra — step by step.
Watch a cloud of atoms decay stochastically in real time. Each atom decays randomly — but together they follow N(t) = N₀·2^(−t/T½) to the letter. Tune T½ and N₀ and see statistical noise vanish at large N.