Radiocarbon dating. A scientist cleaning a sample of a mammoth's tooth for dating using radiocarbon techniques. This uses the ratio between the radioactive isotope carbon-14 (14C) and the stable carbon-12 (12C) isotope in a sample. The ratio of 14C to 12C in the sample may be related to the time since the death of the animal or plant being investigated. Convention states that 14C has a half-life of 5568 years (+/- 30 years),although this is now thought to be too short. Dates from the process are given either as radiocarbon dates,or as solar dates after various corrections have been made | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / King-Holmes, James |
Taille de l’image : | 3682 px × 2480 px |
Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
Property Release : | Non requis |
Restrictions : | - |