Fig. 8
From: Corrosion mechanisms for lead-barium glass from the Warring States period

Fluorescence from the corroded areas of the sample, a image of the corroded area without an excitation light source; b fluorescence from the sample with excitation at 395Â nm; c fluorescence from the sample with excitation at 470Â nm; d fluorescence from the sample with excitation at 545Â nm