Free online courseNuclear Physics and Radioactivity

Course Description

Build confidence in nuclear physics and radioactivity with a focused, exam-ready learning experience designed for school-level Physics. This course helps you move from memorizing facts to understanding how nuclear models explain real observations, so you can tackle typical assessment questions with clarity and speed. You will revisit the structure of the atom, why the nucleus is stable despite strong electrostatic repulsion, and how experimental evidence shaped the modern picture of nuclear size and charge distribution.

Radioactivity is treated as a topic you can calculate with, not just describe. You will learn to connect activity, decay constant, and number of unstable nuclei, and to interpret exponential decay in a way that makes half-life problems feel intuitive. Along the way, you will strengthen your ability to handle scientific notation, units, and rearranging key equations without losing physical meaning. Practice questions are integrated to help you spot common traps and improve accuracy under time pressure.

The course also develops a clear qualitative and quantitative sense of nuclear energy. You will work with binding energy ideas to explain why some reactions release vast amounts of energy, and how fission and fusion differ in mechanism and outcomes. Realistic examples reinforce how mass-energy changes are linked to nuclear stability, and why certain decay pathways are more likely than others.

Finally, you will connect theory to applications through nuclear reactors, including how reaction rates are managed for safe, steady power output. By the end, you should be able to explain key nuclear concepts in clean Physics language and solve core calculation problems with greater confidence, whether you are revising for exams or strengthening fundamentals for the next level of study.