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Posted by / 21-Nov-2019 12:30

What is radioactive isotope dating

The carbon-14 atoms combine with the oxygen in the air to form carbon dioxide (C).Finally, CO2 molecules with radiocarbon, absorbed by vegetation, enter natural environment (D).Carbon 14 can also be used as a radioactive marker.any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of a long-lived radioactive element plus its decay product.The object's approximate age can then be figured out using the known rate of decay of the isotope.

This is why carbon 14, along with potassium 40, accounts for almost all the natural radioactivity of our body.

The carbon 14 found in nature is constantly being regenerated by cosmic rays hitting the atmosphere.

The rate at which the regeneration takes place has gone virtually unchanged for centuries; a feature which depends on the flux of particles bombarding the earth, and the strength of the magnetic field capable of diverting them.

When a living organism dies, the radioactive carbon is no longer absorbed, and the ratio of carbon 14 present begins to decrease.

The amount still present in a sample of what was once a living creature can thus be used to determine its age.

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This is well-established for most isotopic systems.

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