daguerreotype analyses

secondary electron image of a white part of the dag Back scattered electron image of the same area Comparison between secondary (top) and backscattered (bottom) electron images of the white part of a daguerreotype. Note the different atomic masses that...

SEM image of the white portion of the “Bison dag” that was developped with Hg and gilded D. Genty - J. Nouet, june 2009 Note the variability of grain size and shape Back

Element images show the daguerreotype image clearly with mercury (Hg M) and very faintly with gold (Au La). Optical view Mercury map (Hg M) Gold Map (Au) Silver map (Ag Ka) Back to the Analyses section

Analysis of a single white spot using the 10 µm beam highlights the presence of increased Hg in the white spots of this plate, compared with a normal area on the daguerreotype. Back to the Analyses section

Example of XRF imaging and analysis on the daguerreotype «Ammonite» - 3.5x3.5cm plate (D. Genty; S. FitzGerald, Horiba, Lille) Spot analysis (100 µm beam) of the light and dark areas on the daguerreotype show significant differences in composition. Copper,...