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In contrast, there were only four women teachers at the large secondary school I later attended.

Radiometric dating is a complex process complicated by

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Hutton's theories were short on evidence at first, but by 1830 most scientists concurred that Noah's ark was more allegory than reality as they documented geological layering.Using fossils as guides, they began to piece together a crude history of Earth, but it was an imperfect history.Many are also unaware that Bible-believing Christians are among those actively involved in radiometric dating.Geologist Ralph Harvey and historian Mott Greene explain the principles of radiometric dating and its application in determining the age of Earth.If one knows how much of this radioactive material was present initially in the object (by determining how much of the material has decayed), and one knows the half-life of the material, one can deduce the age of the object. Wiens has a Ph D in Physics, with a minor in Geology.and is now the principal source of information about the absolute age of rocks and other geological features, including the age of fossilized life forms or the age of the Earth itself, and can also be used to date a wide range of natural and man-made materials.

Before then, the Bible had provided the only estimate for the age of the world: about 6,000 years, with Genesis as the history book.

All ordinary matter is made up of combinations of chemical elements, each with its own atomic number, indicating the number of protons in the atomic nucleus.

Additionally, elements may exist in different isotopes, with each isotope of an element differing in the number of neutrons in the nucleus.

After all, the ever-changing Earth rarely left a complete geological record.

Radioactive elements were incorporated into the Earth when the Solar System formed.