Carbon isotope used radiocarbon dating does work
on July 16, 1945, and the subsequent above ground testing between 19, caused a rise in neutrons which in turn increased Carbon-14 concentrations around the world.
In a similar way, solar cosmic radiation fluctuates and would cause a fluctuation in the amount Carbon-14 being produced at any one an ongoing process.
Worse still, sometimes they want to know how evolutionists use Carbon-14 to date dinosaur fossils!
Radiometric Dating Technologies are presented to the public by evolutionists as utterly reliable clocks for dating earth rocks or biological materials.
Carbon-14 decays to a zero amount in 250,000 supposed years after its production.
It is incapable of yielding dates in the millions of years.
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.
Even a sealed aquarium has sunlight, X-rays, Gamma Rays, ultra-violet light, etc. These variations cause individual organisms to absorb or reject Carbon-14 at different previously published radiocarbon dates must be corrected or mathematically weighted to correct the dates from the published dates to the actual dates.50,000 years it may be seen that the method is based on many false assumptions.If this water vapor did exist in the past, then it would have effectively shielded the atmosphere from much of the cosmic radiation.This shielding would have drastically reduced the amount of Carbon-14 produced.In high school biology courses they often teach about the inevitable failures of closed systems by taking an aquarium and placing snails, plants and a bowl of water inside; then sealing the aquarium so that no air may get in or out.
The idea is that snails produce carbon dioxide which is utilized by the plants, the plants produce oxygen which utilized by the snails. Of course, it doesnt take long before the experiment fails in death for all those in the aquarium.
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.