“Willard Libby (a scientist who won the Nobel Prize in Chemistry) developed radiocarbon dating as a method of measuring radioactivity. Carbon-14 is a weakly radioactive isotope of carbon; also known as radiocarbon. Radiocarbon dating cannot be applied to metals, but only to selected organic and inorganic materials. The three main methods of radiocarbon dating are: (1) gas proportional counting, (2) liquid scintillation counting, and (3) accelerator mass spectrometry. (Beta-analysis). Radiocarbon dating is the only scientific method that revolutionizes human understanding of events that occurred in the past but also in the present. It is used to prove and disprove theories in archeology and other sciences. (Beta Analytic)Carbon-14 is unstable and its atoms decay into nitrogen atoms. (Biblical Chronologist). Willard Libby was the first to measure the half-life of radiocarbon, or carbon-14, recording it as 5,730 years. When alive, plants absorb and digest carbon-14 from carbon dioxide. (Beta Analytics). They absorb their C atoms through the foods they eat. The absorption of atoms stops when the organism dies. (Biblical Chronologist). Their carbon-14 content gradually decreases upon their death. The rate at which decay occurs is determined by the law of radioactive decay. The amount of carbon-14 that remains in an organism after it dies can be used to determine its age, its age. (Beta Analytic) Proportional gas counting. This method counts the beta particles (radiocarbon decay products) that a particle or organism releases. The measurement in gas proportional meters takes place after the carbon has been converted into carbon dioxide. (Beta Analytic)Liquid scintillation countingIn this method, a scintillation...... middle of paper ......licalchronologist.org/answers/c14_method.php• Richter, AM 2009. Carbon dating and archaeology: l radioactive clock (accessed August 2009): http://archive.cyark.org/carbon-dating-and-archaeology-blog?gclid=Cljjv_GskL0CFa3lTAodZ1oAfw• Ojha, SS 2013. AMS- A new dating method in archaeology• Methods chronological 8- Radiocarbon Meetings. : http://archserve.id.ucsb.edu/courses/anth/fagan/anth3/Courseware/Chronology/08_Radiocarbon_Dating.html• Toothman. J. How has radiocarbon dating changed archaeology?. http://science.howstuffworks.com/environmental/earth/geology/radiocarbon-dating-change-archaeology.htm• Hirst. Kk stratigraphy and seriation. Timing is Everything - A short course in archaeological encounters. http://archaeology.about.com/cs/datingtechniques/a/timing.htm• Higham. T. Petchey. FC-14 meetings. http://www.c14dating.com/applic.html