-
Carbon rates in atmosphere increased CO2 levels but decreased carbon-14 levels.
-
Sir Ernest Rutherford and Frederick Soddy discovered the idea of radioactive decay
-
Martin David Kamen and Sam Ruben isolate the Carbon-14 isotope.
-
Willard Frank Libby found the first method for dating biological material at University of Chicago.
-
Arnold and Libby publish paper "age determination by radiocabon content" in the journal "Science"
-
Testing on known-age Mediterranean samples, radiocarbon rates showed they were younger they they truly were.
-
Gas counting method replaced solid carbon method.
-
Detonations of atomic bombs doubled carbon-14 levels
-
Dutch Scholar Hesse de Vries suggested there are fluctuations in C-14 concentreations according to the temperature.
-
Libby wins Nobel Prize for research.
-
Conference at University of Cambridge puts half life of carbon at 5730 give or take 40years.
-
Calibration testing on tree-rings helped increase accuracy.
-
Accelerator Mass Spectrometer measurements were conducted for the first time. At Rochester/ Toronto and General Ionex Corporation.
-
Accuracy of a difference of 40 years on samples less than 10,000 years old
-
"Journal Radiocarbon" announces more accurate dating to 50,000 years.
