Why do we use carbon 14 for carbon dating
This element is locked in tiny zircons within the granite. While it stays within the zircon for a period of time, being a very small atom, helium escapes the zircon within a few thousand years.
When creation scientists studied granite samples, they made interesting discoveries.
C-14 is produced in the upper atmosphere when nitrogen-14 (N-14) is altered through the effects of cosmic radiation bombardment (a proton is displaced by a neutron effectively changing the nitrogen atom into a carbon isotope).
The new isotope is called "radiocarbon" because it is radioactive, though it is not dangerous.
Outside the range of recorded history, calibration of the 14 clock is not possible.
This means the above calculations are only evolution speculation and NOT backed up by real science.
This does not mean that recalibration is bad, indeed it is necessary, but it should make one more soberly assess any reported dates as being tentative.
When a creature dies, it ceases to consume more radiocarbon while the C-14 already in its body continues to decay back into nitrogen.Examples: For all of these, and more, reasons, calibration is needed in C-14 dating.Thus, reports generally specify the ‘raw’ numbers and the ‘fudged’ numbers.I read the scientific article on the carbon dating done on the Jericho site written by Bruins and Van Der Plicht.When I did the math from their results section of the YBP, they all turned out to be right around the year 1400 .