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What half-life means

What half-life means

Some nuclei in radioactive isotopes are unstable and decay at random by emitting radiation. You cannot predict when one nucleus will decay, but for a large sample you can predict how the activity decreases.

5.2.4a Half-life Lesson

  1. IGCSE
  2. /Physics
  3. /5.2.4a Half-life

Step-by-step lessons on CIE IGCSE Physics 5.2.4a Half-life. Each one builds up to exam-style questions. Build a strong foundation in mechanics and electricity before tackling the more mathematically demanding astrophysics and nuclear topics.

Lessons