Interactive physics simulations
Investigate physics with adjustable models, guided activities and measurement notebooks. Start with a topic below, or browse all 69 simulations.
Measurement
Read vernier scales, use a micrometer and investigate how careful measurements reveal physical relationships.
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Mechanics
Explore forces, motion, momentum, energy and oscillations through interactive mechanics experiments.
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Electricity & magnetism
Build understanding of current, resistance, fields and induction with circuits, motors, generators and electrical measurement labs.
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Waves & sound
Investigate interference, resonance, Doppler shifts and echoes with wave and sound simulations.
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Optics
Trace light through lenses, explore refraction and investigate diffraction, polarisation and colour mixing.
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Thermal physics
Explore gas pressure, heat transfer, specific heat capacity and changes of state using controllable thermal models.
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Fluids & matter
Investigate pressure, upthrust, hydraulic systems and the microscopic motion behind diffusion.
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Atomic & nuclear physics
Explore electron beams, the photoelectric effect, nuclear scattering, X-rays and radioactive counting through idealised models.
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Space & gravity
Explore orbital motion and gravitational attraction by changing mass, separation and initial velocity.
Explore topic →Use a model, then question its limits
Change one variable, record your observations and compare them with a prediction. Each lab explains its assumptions in the guide or model panel. Ideal models do not reproduce every measurement uncertainty or physical effect.