Interactive Simulations
Every simulation includes the governing equations, a guided activity and challenge questions — not just knobs to turn.
Circuit Lab Simulator
Build real circuits on a virtual breadboard: series, parallel, Ohm's law and Kirchhoff's laws with live meters.
InteractiveCircular Motion Simulator
Spin a mass on a string: change the radius, speed and mass to discover exactly how centripetal force depends on each one.
InteractiveCollision Lab Simulator
Crash two carts head-on: set their masses and velocities, flip between elastic and sticky collisions, and verify momentum conservation.
InteractiveDoppler Effect Simulator
Drive a wave source toward and away from an observer: watch wavefronts bunch up ahead, stretch behind, and shift the heard pitch.
InteractiveFree Fall Simulator
Drop objects from any height in a vacuum. Measure fall time and impact speed — and see why mass does not matter.
InteractiveGas Laws Simulator
Heat a sealed gas, squeeze its piston, or hold a variable constant — and watch pressure, volume and temperature obey the gas laws live.
InteractiveInclined Plane Simulator
Slide a block down a ramp: tilt the angle, dial friction up and down, and watch the acceleration respond in real time.
InteractiveLens Ray Diagram Simulator
Move an object toward a converging lens and trace the rays live — watch the image flip from real and inverted to virtual and magnified.
InteractivePendulum Simulator
Swing a pendulum with any length, mass and angle. Verify that the period depends on length — not mass.
InteractiveProjectile Motion Simulator
Launch projectiles at any speed and angle. Watch the trajectory live and discover why 45° gives maximum range.
InteractiveSpring-Mass Oscillator Simulator
Stretch a spring-mass system with any stiffness and mass. Watch simple harmonic motion and test the period formula.
InteractiveWave Interference Simulator
Send two identical waves toward each other and watch them add up — see constructive interference double the height and destructive interference flatten it.