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Undo revision 984135 by Maynardhugh (talk)
'''Willard Libby''' (1908-1980) was a [[University of Chicago]] professor and physical chemist who proposed [[carbon dating]] in the late 1940s and authored a book entitled ''Radiocarbon Dating'' (1952). Libby was heralded as a hero on the cover of ''Time'' magazine<ref>http://sandwalk.blogspot.com/2009/03/nobel-laureate-willard-libby.html</ref> and granted these honors:
'''Willard Libby''' (1908-1980) was a [[University of Chicago]] professor and physical chemist who proposed [[carbon dating]] in the late 1940s and authored a book entitled ''Radiocarbon Dating'' (1952). This work became a favorite of promoters of [[evolution]] and an [[Old Earth]], despite limitations and a disprovable assumption (see below), and Libby was heralded as a hero on the cover of ''Time'' magazine<ref>http://sandwalk.blogspot.com/2009/03/nobel-laureate-willard-libby.html</ref> and granted these honors:
*the Chandler Medal of Columbia University, recognizing outstanding achievement in chemistry (1954)
*the Chandler Medal of Columbia University, recognizing outstanding achievement in chemistry (1954)
*member of the Editorial Board of Science (1962)
*member of the Editorial Board of Science (1962)
The disprovable assumption on which carbon-14 dating was stated by Professor Libby in his book:<ref>W. Libby, ''Radiocarbon Dating'' (Univ. of Chicago Press: 1952).</ref>
:If the cosmic radiation has remained at its present intensity for 20,000 or 30,000 years, and if the carbon reservoir has not changed appreciably in this time, then there exists at the present time a complete balance between the rate of disintegration of radiocarbon atoms and the rate of assimilation of new radiocarbon atoms for all material in the life-cycle.
In fact, even though it would take only about 30,000 years to reach the assumed equilibrium, the present Earth has not yet reached that level, which suggests that Earth is less than 30,000 years old:<ref>http://www.rae.org/bits23.htm</ref>
:The Specific Production Rate (SPR) of C-14 is known to be 18.8 atoms per gram of total carbon per minute. The Specific Decay Rate (SDR) is known to be only 16.1 disintegrations per gram per minute.
== References ==
== References ==