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Isotopes of a particular element have the same number of protons in their nucleus, but different numbers of neutrons.

This means that although they are very similar chemically, they have different masses.

Radiocarbon dating may only be used on organic materials.

Typically (6): The above list is not exhaustive; most organic material is suitable so long as it is of sufficient age and has not mineralised - dinosaur bones are out as they no longer have any carbon left.

This discovery meant that there are three naturally occurring isotopes of carbon: Whereas carbon-12 and carbon-13 are stable isotopes, carbon-14 is unstable or radioactive.

Plants take up c14 along with other carbon isotopes during photosynthesis in the proportions that occur in the atmosphere; animals acquire c14 by eating the plants (or other animals).

Professor Willard Libby produced the first radiocarbon dates in 1949 and was later awarded the Nobel Prize for his efforts.

Radiocarbon dating works by comparing the three different isotopes of carbon.

Rachel Wood ne travaille pas, ne conseille pas, ne possède pas de parts, ne reçoit pas de fonds d'une organisation qui pourrait tirer profit de cet article, et n'a déclaré aucune autre affiliation que son poste universitaire.

Radiocarbon dating has transformed our understanding of the past 50,000 years.




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Manchmal geht's aber auch um eine Schulter, auf der wir lehnen können.


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I use a fishing metaphor for this (sorry ladies, it’s not meant in a sexist way).


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Onder andere na het gebruik van antibiotica (bijvoorbeeld bij een borstontsteking) krijgt deze schimmel de kans zich ongehinderd in het lichaam te verspreiden.


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Like sport but happy to try and fit in whatever interests you may have.