Christian M. Wichern

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Optical and surface metrologies provide non-perturbing (non-contact, non-invasive and non-destructive) instrumental techniques that are amenable and well suited to in situ surface studies of objects of cultural heritage such as original historical and fine art photographs. These innovative non-perturbing topometric technologies provide three dimensional(More)
Surface metrology techniques that are non-perturbing (non-contact, non-invasive, and non-destructive) are well suited to in situ surface studies of historical and fine art photographs. They allow for the quantitative examination of the microstructure of the photograph surface, thereby, offering an important advancement in the examination, documentation, and(More)
‘Three-dimensional surface profilometry’ when used for analysis and product specification reports roughness parameters that provide an average surface description over a relatively large area. Many commercial sheet steels are produced with special textured surfaces for tribological benefits or appearance benefits. These surfaces, as well as others, may(More)
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