Synonyms for carbon dating
He was the happy possessor of eleven volumes,—a goodly number at that date. of dare "to give, grant, offer," from PIE base *do- "to give" (cf. The date should read, according to the change of style, 1608. Of the epistle from Eloisa to Abelard, I do not know the date. In some cases, a date is followed by a period and emdash and then the entry proper. She changed the date and put it back from November to October.
Carbon forms a very large number of organic compounds because it can form strong bonds with itself and with other elements.
Back in the 1940s, the American chemist Willard Libby used this fact to determine the ages of organisms long dead.
Most carbon atoms have six protons and six neutrons in their nuclei and are called carbon 12. But a tiny percentage of carbon is made of carbon 14, or radiocarbon, which has six protons and eight neutrons and is not stable: half of any sample of it decays into other atoms after 5,700 years.
In many foreign languages the words for carbon, coal and charcoal are synonyms. The carbon atoms in it make rings, which are on top of each other and slide very easily. Many of the substances that people use daily are organic compounds.
Carbon in nature is found in three forms called allotropes: diamond, graphite, and fullerenes. A radioactive isotope of carbon, carbon-14, can be used to figure out how old some objects are or when something died.