Sentences with phrase «occurring radioisotope»
Most archaeological dating methods are based on decay of a naturally occurring radioisotope.
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«Radiocarbon dating (usually referred to as simply carbon dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon - 14 (14C) to estimate the age of carbon - bearing materials up to about 58,000 to 62,000 years.»
Not exact matches
To address concerns about the spacecraft's radioisotope thermoelectric generators, which are commonly used for NASA missions, NASA responded by issuing a supplementary document about the flyby and detailing the agency's methodology for protecting the planet, saying there was less than a one - in - a-million chance of an impact occurring.