Changes

: The '''half life''' of an [[isotope]] can be found from plotting a [[graph]] of the amount or [[isotope]] or the [[Count Rate|count rate]] against the [[time]]. The '''half life''' is the time these take to halve from their initial value.

: The [[Count Rate|count rate]] of a sample of [[Unstable Isotope|unstable isotope]] can be predicted given its initial [[Count Rate|count rate]], its '''half life''' and the [[time]] it has been given.

===Finding Half Life and Count Rate from a Table===