Learning the Language
Measurements, units, density, motion, graphs, forces, and energy.
The physics wing of Snail on a Light Beam
The Universe works because Physics.
A physics learning repository for students, teachers, and curious minds.
Organised by grade level, topic, and concept.
Featured learning pathway
IGCSE to IBDP Physics
A guided route through the physics I teach: Grade 9 and 10 IGCSE and Grade 11 and 12 IBDP Physics. This is the main road through the repository.
Using the Ideas
Waves, light, electricity, magnetism , and Space Physics.
Building Models
Uncertainty, mechanics, waves, electricity, thermal physics, and practical work.
Connecting the Universe
Fields, orbital motion, induction, quantum ideas, nuclear physics, and synthesis.
Start here
New, rusty, or just pretending not to be?
Begin with the concepts that make the rest of physics less like a bag of equations and more like a map.
Browse the repository
Two ways into the same universe
Learn by grade level
Follow a structured route through IGCSE foundations and IBDP modelling.
- Grade 9: foundations
- Grade 10: applications
- Grade 11: modelling
- Grade 12: synthesis
Explore by topic
Chase a concept directly, from measurement and motion to fields and quantum ideas.
- Measurement · Motion · Forces
- Energy · Waves · Light
- Electricity · Magnetism · Fields
- Atomic · Nuclear · Quantum
A few Articles
Old pieces, cleaned into new doors
Concept
Measurements and Units
Physics begins with comparison: how long, how heavy, how fast, and how much.
Story
Maria and the Mystery of the Fading Light
A story-shaped doorway into physics ideas, because not every explanation needs a lab coat.
Guide
What to Expect at Different Levels of Physics
A map of how physics changes as learners move from school to deeper study.
Built for learners
Students, teachers, and curious readers
For students
Clear explanations, topic pathways, practical skills, and common mistakes.
For teachers
Reusable explanations, analogies, and structures that can support classroom teaching.
For curious minds
Physics ideas explained without pretending the universe is easier than it is.
A note on understanding
In physics, confusion is often the starting point.
“I don’t understand it. Nobody does.”
The aim is not to know every formula by heart, but to learn what each idea is trying to describe.