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Fig. 10 | Heritage Science

Fig. 10

From: Uncovering the Oppenheimer Siddur: using scientific analysis to reveal the production process of a medieval illuminated Hebrew manuscript

Fig. 10

FTIR-ATR spectrum of the blue hat area in folio 83r (black) compared with reference spectra of azurite powder (grey), various binding media, egg white (blue), animal glue (red), gum Arabic (magenta), egg yolk (cyan), oil (orange) and bare parchment (green). The vertical dashed lines show the absorption lines characteristic of gum arabic (magenta) and azurite (grey)

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