Willard libby carbon dating
As the magnetic field decreases, more cosmic radiation penetrates the earths atmosphere and this causes a slow long-term increase in Carbon-14 production.
These factors combine to cause fluctuations in the Carbon-12/Carbon-14 ratios found in plant, animal and human materials.
The process would continue, halving the amount left every 5,730 years until, theoretically, nothing remained of the original pound.
Then, in another 5,730 years, a second decay period would occur, leaving one quarter of a pound.There is no instrument on earth that can detect Carbon-14 in a specimen that is supposedly older than 18 half-lives. There are, however, many false assumptions that must be made in order to derive Carbon-14 dates and the knowledge of these false assumptions demonstrates the uselessness in this other-wise supposedly useful not varied over the years. There is ample evidence to prove that quite the opposite is true.Experiments done with the radioactive isotopes of Uranium-238 and Iron-57 have shown that rates not only do vary, but can, in fact, be altered by changing the environment surrounding the samples.Besides the aforementioned items, the amount of cosmic radiation in the past, and in particular the amount reaching the atmosphere, may have been dramatically different.
If one were to believe the Bible, the earth was surrounded by a layer of water vapor between Creation and the Flood.If this water vapor did exist in the past, then it would have effectively shielded the atmosphere from much of the cosmic radiation.