Fig. 3: Stereoscopic micrographs of the paint surface revealing traces of the acid attack. | npj Heritage Science

Fig. 3: Stereoscopic micrographs of the paint surface revealing traces of the acid attack.

From: The acid attack (1990) on Rembrandt’s The Night Watch (1642). Reassessing the painting’s condition through a multimodal analytical approach

Fig. 3: Stereoscopic micrographs of the paint surface revealing traces of the acid attack.

A Flattened brushstrokes and crystallisation are visible in the white cuff (indicated with arrows). B The same type of flattening is visible in raking light in an acid trail (indicated with white dashed lines) in the grey shield after varnish removal. C Upon closer inspection it becomes apparent that the grey surface layer is absent, and that the white layer beneath is very porous. D Upon temporary saturation with ShellSol T some of the paint degradation becomes less visible due to reduced scattering of the broken-up surface.

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