NON-DESTRUCTIVE OPTICAL ANALYSIS ON PAINTINGS
It is of fundamental importance to perform scientific analysis on the works of art that consolidate or refute an historical or artistic hypothesis. Our usual procedure is to perform optical non-destructive analysis that can provide information on the artistic technique and on the signs of aging, without making any change to the conservation status of the work of art and without the need for sampling.
Digital photomicrography gives information about the aging of the surfaces, the presence of forgery, the history of paint layers, and on the size of the particles of the pigments used.
EXAMINATION UNDER ULTRAVIOLET LIGHT
Due to the light emitted by the "Wood's Lamp," we are able to illuminate the surface of the works of art with a light different from that found in the visible spectrum perceived by the human eye. The reflected light in the visible spectrum of different materials, allows us to distinguish any adjustment, retouching and forgery, in addition to observe the presence of oxidized paint or forgery of the signatures.
This analysis exploits the capacity of the near to the visible spectrum infrared to penetrate the layers of paint. The reading of the visible reflection of a beam of infrared light can provide information on the presence of any preparatory drawing, alternate ideas of the artist, or about the presence of paint layers underneath the visible one.