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Radioactive Decay & Half-Life

Try this: Start with 8 nuclei. After one half-life, are exactly 4 left?

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About this simulation

Watch a few hundred nuclei decay at their own unpredictable moments, and a curve nobody imposed appear anyway.

Taught in Radioactive Decay

  • radioactive decay
  • half-life
  • activity
  • randomness and statistics

How this runs

The equations of motion are integrated in your browser at a fixed timestep, so the numbers do not depend on your screen’s refresh rate. Nothing is sent to a server. Use Share setup to copy a link that reproduces exactly what you are looking at.