Half-Life and Background Radiation

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IGCSE Physics Lessons
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A series of free GCSE/IGCSE Physics Notes and Lessons.

The following diagram shows how to find the half-live of a radioactive isotope from the graph. Scroll down the page for more examples and solutions.

Half-lives and radioactive decay

Half life
What is meant by the half-life of a radioactive isotope?
How to determine the half-life of a radioactive isotope?
How to calculate the decrease in radioactive count-rate after a given number of half-lives?

Background Radiation
What is meant by background radiation?
Describe two natural and two man-made sources of background radiation.
What is the unit of radiation dose?

Half Life and Background Radiation
Background radiation and sources.
How to read half life graphs?

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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