Predict it. Test it. Understand it.

The map

Physics is built in layers, and each layer is a colour of light. Follow the stages from red to violet; every course shows its lessons and your progress.

Set your level to get a personal starting point.

Set my level

650 nm 590 nm 530 nm 470 nm 410 nm

Each stage is a colour: shorter wavelength, more energetic light, deeper physics.

1
Stage 1 · λ = 650 nm
Explorers · Ages 7–10 · first steps
Pushes and pulls, falling, floating, light and shadows, sound and magnets.
🛝Forces All AroundPushes, pulls, falls and floats: the first rules of how things move.
1 2 3
0/3 lessonsStart
🔦Light, Sound and MagnetsShadows, vibrations and invisible fields: the world you can see, hear and feel.
1 2 3
0/3 lessonsStart
2
Stage 2 · λ = 590 nm
Investigators · Ages 10–13
Measure the world: scale and units, speed, matter and heat, energy, levers and circuits.
📏Measuring the WorldFrom protons to galaxies: units, speed, and what temperature really measures.
1 2 3
0/3 lessonsStart
💡Energy, Machines and CircuitsEnergy never disappears, a lever multiplies your strength, and a circuit needs a loop.
1 2 3
0/3 lessonsStart
3
Stage 3 · λ = 530 nm
Experimenters · Ages 13–16
Newton's laws, momentum, projectiles, work and energy, gravity and orbits.
🚀Motion and Newton's LawsThree laws that explain every push, crash and rocket launch.
1 2 3 4
0/4 lessonsStart
🎯Projectiles and EnergyWhy every throw makes a parabola, and how to predict speeds with energy instead of forces.
1 2
0/2 lessonsStart
🪐Gravity and OrbitsThe force that drops apples also steers the Moon. Learn why orbiting is just falling and missing.
1 2 3
0/3 lessonsStart
4
Stage 4 · λ = 470 nm
Theorists · Ages 16–18
Oscillations and waves, light and optics, electric fields, induction, heat and entropy.
🌊Oscillations and WavesFrom a bouncing spring to sonic booms: the mathematics of everything that wiggles.
1 2 3
0/3 lessonsStart
🔍Light and OpticsBend light, split it into colours, trap it in a fibre and focus it into images.
1 2
0/2 lessonsStart
⚡Electricity and MagnetismCharges, fields, circuits and the discovery that runs every power station on Earth.
1 2 3
0/3 lessonsStart
🔥Heat and EntropyGas laws from bouncing molecules, and the one law of physics that knows the past from the future.
1 2
0/2 lessonsStart
5
Stage 5 · λ = 410 nm
Scholars · Ages 18+ · university
Relativity, quantum physics, least action, chaos, nuclei, particles and the expanding universe.
⏳RelativityTime stretches, lengths shrink, mass is energy, and gravity is the shape of spacetime.
1 2
0/2 lessonsStart
⚛️The Quantum WorldLight comes in packets, electrons behave like waves, and atoms glow in exact colours.
1 2 3
0/3 lessonsStart
🌀Mechanics ReimaginedOne principle behind all of Newton's laws, and the chaos hiding inside them.
1 2
0/2 lessonsStart
🌌Nuclei, Particles and the CosmosFrom the smallest building blocks to the history of the whole universe.
1 2 3
0/3 lessonsStart

A side quest for everyone

For everyone

The story of physics and the people who worked it out.

📜The Story of Physics2,500 years of brilliant guesses, careful experiments and arguments across many cultures.

1 2 3 4

0/4 lessonsStart

⏳Read the history

Explorers · Ages 7–10 · first steps

Investigators · Ages 10–13

Experimenters · Ages 13–16

Theorists · Ages 16–18

Scholars · Ages 18+ · university

For everyone