Pedro's II Berlin device, part of the Imperial Museum of Petropolis collection, Brazil. The perform was evaluation of the thickness of the gold leaf, using the technique of X-Ray Fluorescence, measuring peak intensities (K alpha / K beta or L alpha / L beta) of the elements of ...
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So why does most of the world travel on the right side today?Theories differ,but there's no doubt Napoleon was a major influence.The French have used the right since at least the late 18th century (there's evidence of a Parisian "keep-right" law dating to 1794).Some say that before ...
STUDY ON BRAZILIAN 18TH CENTURY IMPERIAL CARRIAGE USING X-RAY NONDESTRUCTIVE TECHNIQUESRadiographic film exposure is traditionally measured by the transmittance of a beam of light through the film. There are many mathematical and computational models to characterize the curve behaviour and its properties,...