The controversy of using radioactive dating

Based on analysis of the footfall impressions "The Laetoli Footprints" provided convincing evidence for the theory of bipedalism in Pliocene hominins and received significant recognition by scientists and the public.

Since 1998, paleontological expeditions have continued under the leadership of Dr.

Concentrations of actual radionuclides may or may not have been increased; if they have, the term Technologically-Enhanced (TENORM) may be used.

Long-lived radioactive elements such as uranium, thorium and potassium and any of their decay products, such as radium and radon are examples of NORM.

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Wiens has a Ph D in Physics, with a minor in Geology.

However, certain work activities can give rise to significantly enhanced exposures that may need to be controlled by regulation.

Material giving rise to these enhanced exposures has become known as naturally occurring radioactive material (NORM).

'We believe it is possible that neutron emissions by earthquakes could have induced the image formation on the Shroud's linen fibres, through thermal neutron capture on nitrogen nuclei, and could also have caused a wrong radiocarbon dating,' said Professor Alberto Carpinteri, from the Politecnico di Torino. Other scientists have previously suggested that neutron radiation may have been responsible for the ghostly image of a crucified man with his arms crossed.

However, no plausible explanation has been offered for the source of the radiation until now.

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