Nyt produkt Natures Clocks by Douglas Macdougall ivdnnjea

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Radioactivity is like a clock that never needs adjusting writes Doug Macdougall. It would be hard to design a more reliable timekeeper. In Natures Clocks Macdougall tells how scientists who were seeking to understand the past arrived at the ingenious techniques they now use to determine the age of objects and organisms. By examining radiocarbon C14 dating the best known of these methods and several other techniques that geologists use to decode the distant past Macdougall unwrap