Archaeological dating radioisotopes datingconfession com

After death, the carbon-14 to carbon-12 ratio begins to decrease because carbon-14 is decaying away at a constant and predictable rate.

Body conditions could be easily identified by both radioisotopes since they are easily transported through the lymphatic system(Peterson). The carbon-14 it contained at the time of death decays over a long period of time.By measuring the amount of carbon-14 left in dead organic material the approximate time since it died can be worked out.Sodium chloride containing sodium-24, can be injected into the bloodstream to study blood circulation.The beta particles emitted by the sodium-24 are followed and an impaired circulation is immediately detected.The results showed that Ötzi died over 5000 years ago, sometime between 33 BC. Uranium has a very long half-life and so by measuring how much uranium is left in a rock its approximate age can be worked out. Radioisotopes are used in nuclear medicine for diagnostics, treatment and research, as tracers in biochemical and pharmaceutical research, and as “chemical clocks” in geological and archaeological dating.Moreover, carbon 14 are used in archaeological dating. The ratio of carbon-12 and carbon-14 in all living organisms are constant (Peterson). Radioisotopes are used in not only for medical purposes, but also for the geological/ archaeological dating.For example, radioisotope of Cobalt 60 are used in radiotherapy as a treatment.

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