Modern Physics
Use this page to review the core ideas, then practise with your lecture questions, tutorials and past papers.
Core ideas
- Special relativity changes how space and time are related at high speeds.
- Quantum theory describes energy and matter at microscopic scales.
- Atomic spectra arise from quantised energy levels.
- Nuclear processes involve binding energy and radioactive decay.
- Models should be used within the assumptions under which they are valid.
Practice checklist
- Keep units consistent in energy calculations.
- Distinguish wavelength, frequency and photon energy.
- Write radioactive decay equations carefully.
- State assumptions when applying a model.