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Half-life

Learn how the decay rate of a large sample of identical radioactive nuclei can be predicted using its half-life, which is the time it takes for half of the nuclei to decay. Discover how this predictable decay behavior allows us to use radionuclides to estimate the age of rocks, fossils, and other materials.

This lesson is part of the members-only content of High school physics. The first 3 lessons of every course are free โ€” this one starts after the free preview.

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