Formula for carbon dating half life
Howstuffworks "How Carbon-14 Dating Works" radiocarbon WEB-info The method How accurate are Carbon-14 and other radioactive dating methods?
Any of several methods for determining the age of archaeological and fossil remains,rocks,etc,by measuring some property of the organic or inorganic matter that changes with time.
Amateur Radio | |Biology | Books | Chemistry | Data Sheets | Electronics | Math | Microscope | NASA-TV | | Photography | Physics | Radio Astronomy | Robots | Science News | Space-Astronomy | Transistors | Search This Site | The OCR Carbon Dating Home Page Carbon Dating Carbon Dating How accurate are Carbon-14 and other radioactive dating methods? Radiometric Dating BBC - History - Archaeology - Carbon Dating Dating Exhibit How about carbon dating? Atmospheric carbon consists mainly of the stable isotope C-12 and a small but constant proportion of C-14 ,a radio nuclide of half life 5730 years resulting from the bombardment of atmospheric nitrogen by neutrons produced by the action of Cosmic rays.All living organisms absorb carbon from atmospheric CO2 ,but after death ,absorption ceases and the once constant ratio C-14/C-12 decreases due to the decay of C-14.[latex]_\quad \longrightarrow _\quad e \xrightarrow [/latex]The C-14 concentration in a sample ,found by using a sensitive counter of particles,gives an estimate of the time elapsed since death of the living organism.The property may alternatively be dependent on a chemical change with a time dependent rate constant ,such as amino acid racemization.
Radiocarbon dating (or carbon -14 dating) is a method for determining the age of objects up to 35000 years old containing matter that was once living,such as wood.
The age of geological specimens,which can be many millions of years old,is determined from the proportion of a natural radio nuclide (with a very long half life ) and its daughter nuclide contained in a sample of rock or mineral.