The burial shroud purports to show the imprint of the face and body of a bearded man.
Pope Francis sent a special video message to the televised event in the Cathedral of Saint John the Baptist in Turin, Italy, which coincided with Holy Saturday, when Catholics mark the period between Christ's crucifixion on Good Friday and his resurrection on Easter Sunday.
The Vatican, tiptoeing carefully, has never claimed that the 14-foot linen cloth was, as some believers claim, used to cover Christ after he was taken from the cross 2,000 years ago.
The measurements were carried out independently in three accelerator mass spectrometry (AMS) laboratories located at the University of Arizona, Tucson, Arizona, USA, Oxford University, Oxford, England, and ETH-Hönggerberg, Zürich, Switzerland with assistance for certification and data analysis provided by the British Museum.
The author concludes that, although the procedures followed differed substantially from those recommended at a workshop organized by the Pontifical Academy of Sciences, the results are credible.
The results provide conclusive evidence that the linen of the Shroud of Turin is mediaeval.
New scientific tests on the Shroud of Turin, which was on display Saturday in a special TV appearance introduced by the Pope, dates the cloth to ancient times, challenging earlier experiments dating it only to the Middle Ages..
Neutron radiation is usually generated by nuclear fusion or fission, and may be produced by nuclear reactors or particle accelerators.
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.
Now Carpinteri’s team have hypothesized that high-frequency pressure waves generated in the Earth’s crust during earthquakes are the source of such neutron emissions.
The scientists base the idea on research into piezonuclear fission reactions which occur when brittle rock is crushed under enormous pressure.
It was first displayed at Lirey in France in the 1350s and subsequently passed into the hands of the Dukes of Savoy.