For Bangladesh HSC students

Learn physics by playing with it 🧪

Interactive simulations for Physics 1st & 2nd paper, organised chapter by chapter. Move the sliders, watch the animation, and see the formulas come alive.

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Physics 1st Paper

10 chapters · 30 simulations — motion, energy, gravitation, waves and more.

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Physics 2nd Paper

11 chapters · 25 simulations — electricity, optics, modern physics and astrophysics.

Popular simulations

Jump straight into a working simulation.

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Projectile Motion

Launch a ball and watch its curved path change with angle and speed.

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Orbit Simulator

Give a planet a sideways speed and watch it orbit under gravity.

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Wave Simulator

Change wavelength, frequency and amplitude to explore travelling waves.

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Ohm's Law Circuit

Adjust voltage and resistance to see the current flow change.

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Lens Ray Diagram (Convex & Concave)

Switch between converging and diverging lenses and see every image case.

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Hubble's Law & Expanding Universe

See galaxies recede faster the farther they are (v = H₀·d).