Radioactive decay dating game

On the surface, radiometric dating methods appear to give powerful support to the statement that life has existed on the earth for hundreds of millions, even billions, of years.

We are told that these methods are accurate to a few percent, and that there are many different methods.

But just how do researchers determine the ages of the materials they unearth?Although Boltwood's resulting estimates for things like the age of Earth¿which he placed at around 2.2 billion years¿have since been significantly revised, he indicated correctly that our planet was far older than people had imagined possible.In the decades that followed, scientists made important new discoveries about the structure and behavior of atoms, and they refined their existing dating techniques.Sometimes the product of that nuclear decay is unstable itself and undergoes nuclear decay, too.For example, when U-238 (one of the radioactive isotopes of uranium) initially decays, it produces Th-234, which decays to Pa-234.

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  1. Expect to see a first time performance of “Perhaps the Last Flight” and “Dancer” by Emmy Hennings at the Dada Poetry Salon this Friday March 19th at the Cornelia St. The third annual edition of the very special one-night-only Da Da Poetry Salon, with Da Da hostess Kat Georges!