carbon 14 वाक्य

Then they measured how much radioactive carbon 14 and the stable carbon 13 were present in both the organic carbon and the carbonate minerals.
There was a breakthrough when he allowed plant cells of the single-cell green algae chlorella to absorb carbon dioxide tagged with carbon 14.
His work amounted to " the first major application to use carbon 14 radioactive isotope as a tracer for a chemical pathway,"
Calvin, using radioactive carbon 14 to trace stages in the process, helped explain how plants turn carbon dioxide and water into sugar during photosynthesis.
In that incident, Ahmed was working with carbon 14 at the California Bionuclear Corp . when a small explosion and fire occurred, Wright said.

The cave's human remains appear to represent one of very few associations of Carbon 14 measurements to approximately 25, 000 years in age.
Why do we still place our faith in carbon 14 dating when it has proven inaccurate every single time sombody has tried to trick the system?
The first puzzlement, of course, comes from the chorus : " . . . deadly for 10, 000 years is Carbon 14 ".
Carbon 14 cannot help because it has a margin of error of 50 years and it is already known that the mummies died between 1850 and 1950.
Analysis of Chinese rice residues from Pengtoushan, which were carbon 14 dated to 8200 7800 BC, show that rice had been domesticated by this time.