History carbon dating
For example, in AD 774–775 there was an increase of 1.2% in the C content of tree rings, which was about 20 times as high as the background rate of variation.[ix] This “spike” was followed by a decline that lasted several years.
It is widely accepted that the mass burning of coal during the industrial revolution released an enormous amount of C ratio before the industrial revolution, and modern carbon dating takes this into account by running experimental measurements through a calibration formula.[vii] But how do we know what the ratio was like thousands of years ago? The dating system hangs on these types of assumptions! Several studies have shown: 1) significant solar flares have occurred in the past, and 2) these flares have an impact on carbon levels in the atmosphere.Radiocarbon decays slowly in a living organism, and the amount lost is continually replenished as long as the organism takes in air or food.Once the organism dies, however, it ceases to absorb carbon-14, so that the amount of the radiocarbon in its tissues steadily decreases.Nearby limestone can also affect carbon isotope concentrations, giving false ages—or at least ages that need even more corrections. Geologic indicators show that atmospheric COC concentration, again making artifacts look older than they are. Several thousand years ago, Earth’s magnetic field may have been twice as strong as today, assuming today’s decay rate.[xiv] This would have slowed the rate at which cosmic radiation generates .For example, Scientific American’s take on the article was: “A T-shirt made in 2050 could look exactly like one worn by William the Conqueror a thousand years earlier to someone using radiocarbon dating if emissions continue under a business-as-usual scenario.
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