20 – Radioactivity

20.1 – Structure of the Atom

20.2 – Nuclear Decay

20.3 – Measuring Ionising Radiation

20.4 – Half-life

20.5 – Background Radiation

20.6.1 – Nuclear Fission

20.6.2 – Nuclear Fusion

20.7 – Applications of Radioactivity

20.8 – Hazards of Radioactivity

20.9 – Advanced Physics Extension (Advanced Physics Topic)

 

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Quotes by Physicists

"Science is a way of life. Science is a perspective. Science is the process that takes us from confusion to understanding in a manner that’s precise, predictive and reliable – a transformation, for those lucky enough to experience it, that is empowering and emotional."

Brian Greene

2026 Physics Lessons