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Heritage Science
Fig. 11 | Heritage Science

Fig. 11

From: Navigating conservation strategies: linking material research on alum-treated wood from the Oseberg collection to conservation decisions

Fig. 11

Both images were taken at the same X-ray exposure. a Fresh birch; b an Oseberg sample where alum had been removed and the wood freeze dried. The greater attenuation in the fresh birch (the image is brighter) indicates a greater wood density, and hence better state of preservation. The bar shows 50 μm. Acquired at TOMCAT, PSI by Hartmut Kutzke (HK), Mikkel Christensen (MC) and SB

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