Clicking on any photo will show you the full 1200 or 1600 width version if your screen resolution allows it – they are very much clearer.
All the photos were originally taken at much higher resolution – up to 6000 pixels wide – if you want a higher resolution version of any of the photos e.g.
The results showed that Ötzi died over 5000 years ago, sometime between 33 BC. Uranium has a very long half-life and so by measuring how much uranium is left in a rock its approximate age can be worked out.
Materials that originally came from living things, such as wood and natural fibres, can be dated by measuring the amount of carbon-14 they contain.
The carbon-14 it contained at the time of death decays over a long period of time, and the radioactivity of the material decreases.
The approximate time since the organism died can be worked out by measuring the amount of carbon-14 left in its remains compared to the amount in living organisms.
You are responsible for ensuring that what you do is within your capabilities and is safe and legal in your country.
Guns, even antiques, can be dangerous and if you don’t know what you are doing get expert help.
When they die no new carbon-14 is taken in by the dead organism.
Half of the remaining Carbon-14 then decays over the next 5730 years leaving one fourth of the original amount.
By measuring the ratio of Carbon-14 in a sample and comparing it to the amount in a recently deceased sample its date can be determined.
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