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Please could we spend some time recapping the idea of half life.

The questions are in the half life folder, and the sheet is called "Half Life Questions 1."

Hints: I showed you that the is always "background" radiation hitting us all the time. Some of the questions involved correcting for half life. Please give these a go, and don't worry we will return to these questions when i tackle background radiations next week.

Thanks all, please do ask if i can help.

cheers

Mr Clarke