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methods scientific dating-54methods scientific dating-54methods scientific dating-80

When I have asked an audience this question they have looked at me incredulously and said, “Starting time?

” They realize that you cannot know how long the swimmer took unless you knew the time on the wristwatch when the race started.

1 - Department of Geosciences, 2 - Department of Physics, University of Arizona, Tucson, Arizona 85721, USA 3 - Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, OX1 3QJ, UK 4 - Institut für Mittelenergiephysik, ETH-Hönggerberg, CH-8093 Zürich, Switzerland 5 - Lamont-Doherty Geological Observatory, Columbia University, Palisades, New York 10964, USA 6 - Research Laboratory, British Museum, London WC1B 3DG, UK Very small samples from the Shroud of Turin have been dated by accelerator mass spectrometry in laboratories at Arizona, Oxford and Zurich.

As Controls, three samples whose ages had been determined independently were also dated.

It was first displayed at Lirey in France in the 1350s and subsequently passed into the hands of the Dukes of Savoy.

After many journeys the shroud was finally brought to Turin in 1578 where, in 1694, it was placed in the royal chapel of Turin Cathedral in a specially designed shrine.

Photography of the shroud by Secondo Pia in 1898 indicated that the image resembled a photographic 'negative' and represents the first modern study.

Subsequently the shroud was made available for scientific examination, first in 19 by a committee appointed by Cardinal Michele Pellegrino .

Seriation uses the assumption that once a tool was developed, its use would become more widespread.

Stratigraphy uses the assumption that higher layers or strata were laid down after lower layers.

Once we understand what we actually need to do we can apply the same principles to radioactive dating, and see if the methods do what they are claimed to do.