Carbon 14

History of Carbon Dating

  • Period: to

    Industrial Revolution

    Carbon rates in atmosphere increased CO2 levels but decreased carbon-14 levels.
  • Early Discovery

    Early Discovery
    Sir Ernest Rutherford and Frederick Soddy discovered the idea of radioactive decay
  • Isolation Begins

    Isolation Begins
    Martin David Kamen and Sam Ruben isolate the Carbon-14 isotope.
  • Dating Begins

    Dating Begins
    Willard Frank Libby found the first method for dating biological material at University of Chicago.
  • Letting the World Know

    Letting the World Know
    Arnold and Libby publish paper "age determination by radiocabon content" in the journal "Science"
  • Can it be Trusted??

    Can it be Trusted??
    Testing on known-age Mediterranean samples, radiocarbon rates showed they were younger they they truly were.
  • Adding Fuel to the Fire

    Adding Fuel to the Fire
    Gas counting method replaced solid carbon method.
  • Period: to

    Atomic Testing

    Detonations of atomic bombs doubled carbon-14 levels
  • Importance of Temperature

    Importance of Temperature
    Dutch Scholar Hesse de Vries suggested there are fluctuations in C-14 concentreations according to the temperature.
  • Prize for the findings

    Prize for the findings
    Libby wins Nobel Prize for research.
  • Cambridge Half-life

    Cambridge Half-life
    Conference at University of Cambridge puts half life of carbon at 5730 give or take 40years.
  • Tree-ring Testing

    Tree-ring Testing
    Calibration testing on tree-rings helped increase accuracy.
  • More Precise Dating

    More Precise Dating
    Accelerator Mass Spectrometer measurements were conducted for the first time. At Rochester/ Toronto and General Ionex Corporation.
  • Closer to Perfection

    Closer to Perfection
    Accuracy of a difference of 40 years on samples less than 10,000 years old
  • Aim for Accuracy

    Aim for Accuracy
    "Journal Radiocarbon" announces more accurate dating to 50,000 years.