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Fig. 4 | Heritage Science

Fig. 4

From: Discovery of Vespasiano Bignami paintings at the National Theatre of Costa Rica through technical photography and UV–Vis spectroscopy

Fig. 4

a Measurements of UV–Vis in painting The Music (M1 to M5) showing the center wavelength (xc) and the measurements M6 and M7 for the Madder lake in the Pigment Checker, b Box plot with xc from painting The Music (M1–M5, see Fig. 2), Pigment Checker from CHSOS (M6–M7), and reference from literature (M8). Black points correspond to the experimental data

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