How old is earth based on radiometric dating
From the fragments, scientists calculated the relative abundances of elements that formed as radioactive uranium decayed over billions of years."It was not until the 1950s that the age of the universe was finally revised and put safely beyond the age of the Earth, which had at last reached its true age of 4.56 billion years," Lewis said."Physicists suddenly gained a new respect for geologists."For the record, the universe is now thought to have debuted, at least in its latest incarnation, about 13.7 billion ago.The question of the age of the earth has produced heated discussions on Internet debate boards, TV, radio, in classrooms, and in many churches, Christian colleges, and seminaries. Let’s give a little history of where these two basic calculations came from and which worldview is more reasonable. Of course, the Bible doesn’t say explicitly anywhere, “The earth is 6,000 years old.” Good thing it doesn’t; otherwise it would be out of date the following year.But we wouldn’t expect an all-knowing God to make that kind of a mistake. In essence, He gave us a “birth certificate.” For example, using a personal birth certificate, a person can calculate how old he is at any point. Genesis 1 says that the earth was created on the first day of creation ().The age of the earth can be estimated by taking the first five days of creation (from earth’s creation to Adam), then following the genealogies from Adam to Abraham in Genesis 5 and 11, then adding in the time from Abraham to today.Adam was created on day 6, so there were five days before him. So a simple calculation is: At this point, the first five days are negligible.Cultures throughout the world have kept track of history as well.
But for the sprawling sphere we call home, age is a much trickier matter.In 1898, Marie Curie discovered the phenomenon of radioactivity, in which unstable atoms lose energy, or decay, by emitting radiation in the form of particles or electromagnetic waves.By 1904 physicist Ernest Rutherford showed how this decay process could act as a clock for dating old rocks.Three of the old-earth advocates included Comte de Buffon, who thought the earth was at least 75,000 years old.Pièrre La Place imagined an indefinite but very long history.
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And Jean Lamarck also proposed long ages.11 However, the idea of millions of years really took hold in geology when men like Abraham Werner, James Hutton, William Smith, Georges Cuvier, and Charles Lyell used their interpretations of geology as the standard, rather than the Bible.