Radiometric dating

Radiometric dating

Update: 2009-07-07
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Description

The beta counter is a device used to measure radiation levels, and has also been used to determine the age of rocks and other minerals. This video illustrates how this is possible.
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Geological time

Geological time

2009-07-0700:50

The age of rocks

The age of rocks

2009-07-0704:45

Coins and fossils

Coins and fossils

2009-07-0702:00

Geological maps

Geological maps

2009-07-0706:07

Rock layers

Rock layers

2009-07-0703:07

Radiometric dating

Radiometric dating

2009-07-0705:11

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Radiometric dating

Radiometric dating

The Open University