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Radioactive dating methods are best used to

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Most incredibly, he had gained a sixth sense that provided him with early warning of impending danger.

Disguised, Peter tested his new-found abilities defeating professional wrestler Crusher Hogan in the ring, and earning some cash.

In the graph above, the count rate drops from 80 to 40 counts a minute in two days, so the half-life is two days.

In the next two days, it drops from 40 to 20 - it halves.

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The new method does not involve removing a sample of the object.

Scientists have developed a new method to determine the age of ancient mummies, old artwork, and other relics without causing damage to these treasures of global cultural heritage.

Reporting at the 239th National Meeting of the American Chemical Society (ACS), they said it could allow scientific analysis of hundreds of artifacts that until now were off limits because museums and private collectors did not want the objects damaged.

There are two definitions of half-life, but they mean essentially the same thing.

Half-life is the time taken for: Different radioactive isotopes have different half-lives.