Play with real physics instead of just reading about it — powered by PhET Interactive Simulations, University of Colorado Boulder (free & open, CC BY 4.0).
Push, pull, add friction and see net force, motion and forces in action.
Launch SimulationFire projectiles and explore range, height and trajectory with air resistance.
Launch SimulationVisualize kinetic, potential and thermal energy as a skater moves on a track.
Launch SimulationExplore how mass, length and gravity affect the period of a pendulum.
Launch SimulationStretch a spring and see the restoring force and spring constant live.
Launch SimulationMove the sun, earth, moon and space station to see how gravity creates orbits.
Launch SimulationInvestigate momentum conservation in elastic and inelastic collisions.
Launch SimulationGenerate pulses and continuous waves; adjust amplitude, frequency and damping.
Launch SimulationSee constructive and destructive interference with water, sound and light waves.
Launch SimulationVisualize pressure waves from a speaker and how frequency changes pitch.
Launch SimulationExplore coupled oscillators and the normal modes of a system of masses and springs.
Launch SimulationBuild real circuits with batteries, resistors and bulbs and measure current live.
Launch SimulationSee how voltage, current and resistance relate to each other in V = IR.
Launch SimulationPlace charges and map out electric field lines and equipotential surfaces.
Launch SimulationVary charge and distance to see how the electric force between charges changes.
Launch SimulationMove a magnet through a coil and see electromagnetic induction generate a current.
Launch SimulationExplore refraction, reflection and total internal reflection at a boundary.
Launch SimulationMove an object and lens to see real vs. virtual images and ray diagrams form.
Launch SimulationFire alpha particles at atoms and see how the gold-foil experiment revealed the nucleus.
Launch SimulationCompare Bohr, Plum Pudding, Classical and Schrodinger models of the atom.
Launch SimulationChange temperature and see how the blackbody radiation spectrum shifts.
Launch Simulation