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Mechanics playground

Projectile motion, free fall, pendulum/SHM and collisions — sliders for mass, angle, velocity and gravity, with live v-t and s-t graphs.

Work, power & energy lab

Work at any angle, the work–energy theorem on a rough slope, energy conservation on a loop-the-loop track, and the power of a car and a motor — with live energy bars and worked explanations.

Newton's laws & friction lab

Force and motion (inertia, F = ma), static and kinetic friction, a block on a rough slope with the angle of repose, strings and contact forces, and a person on a scale in a lift — with free-body diagrams and worked explanations.

Refraction & prisms lab

Snell's law and total internal reflection, a glass slab and apparent depth, a prism that splits white light, an optical fibre and the lens-maker's formula traced ray by ray.

Magnetism lab

Charges in magnetic fields (circles, helices, the velocity selector, mass spectrometer and cyclotron), the fields of a wire, a loop and a solenoid, and forces on currents with the motor effect.

Gravitation lab

Kepler's laws with real planets and Halley's comet, satellites and Newton's cannon, the escape speed, how g changes above and inside a planet, and two stars circling their centre of mass.

Fluids & elasticity lab

Pressure and Pascal's law, buoyancy, Bernoulli's principle, Torricelli's jet, viscosity, surface tension and capillary rise, and stress, strain and Young's modulus.

Circuit builder

Build a custom series or parallel circuit and watch the current flow, then run the class 12 experiments: Kirchhoff's laws, charging a capacitor, Wheatstone and meter bridges, the potentiometer, ammeters and voltmeters, cells in a battery and the drift of electrons.

Optics lab

Draggable ray diagrams for concave/convex mirrors and lenses, with a live two-ray construction and real/virtual/erect/inverted classification.

Lab · Class 11 & 12

Waves & sound lab

A wave on a string, standing waves, organ pipes and the resonance tube, beats, two-source interference, Young's double slit and diffraction, the Doppler effect and sound intensity in decibels.

Lab · Class 11

Rotational motion sandbox

Torque and balance, a rolling-shapes race, and a spinning disk that conserves angular momentum.

Lab · Class 11

Thermodynamics visualizer

A kinetic-theory gas box and the four PV processes, heat engines and the Carnot cycle, calorimetry and latent heat, conduction, radiation, Newton's law of cooling, thermal expansion and the speeds of gas molecules.

Lab · Class 12

Electricity & magnetism lab

Draggable charges with real traced field lines, a moving magnet inducing EMF, and a live R-L-C phasor diagram.

Explainers + lab · Class 12

Modern physics

Bohr's hydrogen orbits, the photoelectric effect and semiconductor bands as animated explainers, plus radioactivity and an interactive nuclear lab: the decay law, radioactive dating, alpha, beta and gamma radiation, binding energy, fission and fusion.

explainer

Lab · Class 12

Logic gate lab

Wire up to 10 AND/OR/NOT/NAND/NOR/XOR/XNOR gates together and press Check answer for a slow, fully-explained reveal of the output — plus 10 preset circuits and JEE/NEET-style practice questions.