Fig. 5
Sample 1. Fibres of different colours are visible in the micrographs taken with Spotlight 400 FT-IR microscope (a). ATR-FT-IR analysis of the dust, baseline and Kubelka–Munk correction applied (b)
Fig. 5 | Heritage Science
Sample 1. Fibres of different colours are visible in the micrographs taken with Spotlight 400 FT-IR microscope (a). ATR-FT-IR analysis of the dust, baseline and Kubelka–Munk correction applied (b)