from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A radioactive isotope of carbon, especially carbon 14.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A radioactive isotope of carbon, especially 146C
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a radioactive isotope of carbon
The technique the scientists use is known as radiocarbon dating and is more commonly used by archaeologists to date ancient fragments of bone and wood.
Carbon dating (aka radiocarbon dating) is pretty reliable, when the samples are good, up to 30 or 40 thousand years ago, and in some cases the method can be extended to just over 100 thousand years ago.
Everyone assumes that dates that follow the word "radiocarbon" are accurate, precise and sure.
The process has a huge advantage over standard methods such as radiocarbon dating, which is plagued by large error ranges, Kirch said.
Scholars have cast doubt on the Shroud of Turin's authenticity, citing scientific evidence such as radiocarbon testing that date it to medieval times.
'Traditional methods of dating the pigments, such as radiocarbon, are destructive to the paintings, and the samples are prone to contamination.
The radiocarbon assay of charcoal from one of these fire pits gave an age of 1580 +/- 40 B.P. Deryl noticed two other fire pit areas a few hundred feet farther back from the river on the north slope of the ridge.
Once state archaeologists were called in, 101 canoes or partial canoes were found and studied, their positions mapped and samples of their wood radiocarbon dated.
A sample of bone from the body was sent to a lab for radiocarbon dating, yielding the same age.
But in their fourth year of field work, they obtained radiocarbon dates from Anakena Beach, thought to be the island's oldest settlement.
Wordnik is becoming a not-for-profit! Read our announcement here.