In the special case in which parent and daughter atoms are present in equal quantities, the age of the specimen is the half-life of the parent isotope: The first assumption, that the amount of the daughter isotope in the original rock is known, is the weakest assumption.

2 types of radiometric dating-392 types of radiometric dating-88

Understand how decay and half life work to enable radiometric dating.

Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.

Radiometric dating utilizes the decay rates of certain radioactive atoms to date rocks or artifacts.

Uniformitarian geologists consider this form of dating strong evidence that the Earth is billions of years old.

But new research by creationists has revealed a large number of problems with radiometric dating.

In some cases such as Carbon-14 dating, radioactive dating actually gives strong evidence for a young Earth.

Other methods such as Potassium-argon dating and Isochron dating are based on faulty assumptions and so unreliable as to be useless.

Many atoms (or elements) exist as numerous varieties called isotopes, some of which are radioactive, meaning they decay over time by losing particles.

Radiometric dating is based on the decay rate of these isotopes into stable nonradioactive isotopes.

To date an object, scientists measure the quantity of parent and daughter isotope in a sample, and use the atomic decay rate to determine its possible age.

For example, in the The decay constant has dimensions of reciprocal seconds.