Illustrated Concepts
Explore science, mathematics, and technology through beautiful interactive simulations.See concepts come alive with visual-first learning.
Interactive Simulations
Try these demos. Understanding begins with seeing.
Visualize motion under gravity with live control of g, height, and initial velocity.
Live simulation · OpenWatch α-particles scatter from a tiny nucleus with controllable Z and energy.
Live simulation · OpenMoving spaceship and clocks: see time dilation and length contraction as v/c changes.
Live simulation · OpenRubber-sheet spacetime and gravitational lensing: see mass curve the grid and light rays bend.
Live simulation · OpenEvent horizon, bent light rays, and time slowing near the hole. Adjust mass and impact parameter.
Live simulation · Open2D space folded into a tunnel: see shortcuts and why wormholes are unstable.
Live simulation · OpenClosed timelike curves, timeline splitting, and why paradoxes happen.
Live simulation · OpenParticles gradually forming an interference pattern. See wave–particle duality.
Live simulation · OpenStates overlapping like Schrödinger's cat. See probability clouds instead of fixed positions.
Live simulation · OpenTwo particles reacting together no matter the distance. Measure one and see the other correlate.
Live simulation · OpenEnergy barrier with E < V₀: particles tunnel through classically forbidden regions.
Live simulation · OpenBefore measurement: fuzzy probability. After: one sharp outcome.
Live simulation · OpenDrive an oscillator at its natural frequency and watch the amplitude soar. Adjust damping and force for dramatic effects.
Live simulation · OpenAlpha particles and a massive nucleus at nuclear scales. Adjust MeV, fm and mass units to see how they change scattering.
Live simulation · OpenVisualize 2D projectile motion with adjustable speed, launch angle, height and gravity.
Live simulation · OpenInteractive v–t and x–t graphs for kinematics.
Live simulation · OpenExplore v = u + at, s = ut + ½at² and v² = u² + 2as.
Live simulation · OpenDrive a damped oscillator and see amplitude peak at resonance when f ≈ f₀.
Live simulation · OpenExplore how friction stops a sliding block. Adjust mass, initial velocity, and friction; see stopping distance and work done. Net Work = ΔKE.
Live simulation · OpenWhy Illustrate?
Interactive
Adjust values and instantly see changes in behavior, motion, or reactions.
Visual First
Designed to build intuition before formulas and definitions.
Concept Focused
Each page explains one idea deeply, not superficially.