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Joan of Arc Relics Exposed as Fakes by Spectrometry

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PARIS, April 4, 2007 -- Using techniques including mass, infrared and atomic-emission spectrometry, experts have proven that remains thought to be of St. Joan of Arc are actually those from an Egyptian mummy.  The relics kept at a French church and thought to belong to 15th century French heroine Joan of Arc, who was burned at the stake in 1431 in Rouen, Normandy, were found to instead be the remains of an Egyptian mummy after being analyzed by European experts. The story appears in the April 5 edition of the journal Nature. Philippe Charlier, a forensic scientist who obtained permission to study the relics,...Read full article

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    Published: April 2007
    Glossary
    infrared
    Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but shorter than those of microwaves. The infrared spectrum spans wavelengths roughly between 700 nanometers (nm) and 1 millimeter (mm). It is divided into three main subcategories: Near-infrared (NIR): Wavelengths from approximately 700 nm to 1.4 micrometers (µm). Near-infrared light is often used in telecommunications, as well as in various imaging and sensing...
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    spectrometry
    The study and measurement of spectra and their components.
    atomic-emissionBasic ScienceBiophotonicscarbon-14cat femurCharlierchemicalsEgyptianembalmingforgerygypsuminfraredJoan of ArcMassMicroscopymummyNatureNews & Featuresphotonicsrelicsspectrometryspectroscopystake

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