Using radiometric dating how old is the earth

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Scientists use observational science to measure the amount of a daughter element within a rock sample and to determine the present observable decay rate of the parent element.

Dating methods must also rely on another kind of science called historical science. Determining the conditions present when a rock first formed can only be studied through historical science.

Determining how the environment might have affected a rock also falls under historical science. Since radioisotope dating uses both types of science, we can’t directly measure the age of something.

We can use scientific techniques in the present, combined with assumptions about historical events, to estimate the age.

Half-lives as measured today are very accurate, even the extremely slow half-lives.Dating meteorites thus allows us to give a lower age to the Solar System (4,56 billion years old).Lead isotope isochron that Clair Patterson used to determine the age of the solar system and Earth (Patterson, C., 1956, Age of meteorites and the earth: Geochimica et Cosmochimica Acta 10: 230-237).Proponents of evolution publicize radioisotope dating as a reliable and consistent method for obtaining absolute ages of rocks and the age of the earth.This apparent consistency in textbooks and the media has convinced many Christians to accept an old earth (4.6 billion years old).

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