Physics HL

Concept Explanations

If you are writing your final exams in 2025 or later, then you are in the right place.

To find our Concept Explanations for the syllabus that ends with the November 2024 exams, click here

If you are here for the first time, please check out our free resources and our FAQ.

Mathematical Tools

Measurements in Physics
Free access
Uncertainties and Errors
Free access
Vectors and Scalars
Free access

Topic A

Space, Time, and Motion

Kinematics
Free access
Forces and Momentum
Basic Membership
Work, Energy, and Power
Full Membership
Rigid Body Mechanics
Full Membership
Galilean and Special Relativity
Full Membership

Topic B

The Particulate Nature of Matter

Thermal Energy Transfers
Free access
Greenhouse Effect
Full Membership
Gas Laws
Full Membership
Thermodynamics

Coming soon!

Full Membership
Current and Circuits
Full Membership

Topic C

Wave Behaviour

Simple Harmonic Motion
Free access
Wave Model
Full Membership
Wave Phenomena
Full Membership
Standing Waves and Resonance
Full Membership
Doppler Effect
Full Membership

Topic D

Fields

Gravitational Fields
Free access
Electric and Magnetic Fields
Full Membership
Motion in Electromagnetic Fields

Coming soon!

Full Membership
Induction

Coming soon!

Full Membership

Topic E

Nuclear and Quantum Physics

Currently being added :)

Structure of the Atom
Free access
Quantum Physics
Full Membership
Radioactive Decay
Full Membership
Fission
Full Membership
Fusion and Stars
Full Membership