As Light Meets Matter: ( Testing Forgeries)
spectroscopic techniques
study of the interaction between matter and radiated energy
infrared spectroscopy (IR)
By IR refractography
Spectrometer
Microscope
ultraviolet (UV) spectrum
Ultraviolet (UV) light is electromagnetic radiation with a wavelength shorter than that of visible ligh
different strata taken from paint samples
x-ray fluorescence (XRF
composition of pigments used 1839-190
using short-wave and long-wave UV excitation from mercury lamp