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4.2.3 Half-lives and the random nature of radioactive decay
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What is half-life?

What is half-life?

Exponential decay curve showing the fraction remaining halving from 1 to 0.5, 0.25, 0.125 and 0.0625 over four half-lives

Radioactive decay is random for an individual unstable nucleus. You cannot predict exactly when one particular nucleus will decay.

4.2.3 Half-lives and the random nature of radioactive decay Lesson

  1. GCSE
  2. /Physics
  3. /4.2.3 Half-lives and the random nature of radioactive decay

Step-by-step lessons on AQA GCSE Physics 4.2.3 Half-lives and the random nature of radioactive decay. Each one builds up to exam-style questions. Build a strong grip on equations, units and Key Stage 3 fundamentals before tackling the more demanding topics like electromagnetism, the particle model of matter and space physics.

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