Figure 5
Scatterograms and reflectance spectra of a single green scale of Parides aeneas illuminated with a wide-aperture, white-light beam. A, B Scatterograms of the upperside and the underside of the scale with unpolarized light. C Reflectance peak wavelengths, derived from reflectance measurements, compared to peak wavelengths calculated with the interference condition of classical multilayer theory.