Laboratory of FORS and MO

Abstract

In this laboratory activity, the Fiber Optic Reflectance Spectroscopy (FORS) and the Optical Microscopy (MO) techniques will be introduced. After a brief introduction about the theory, instrumentations and applications of both techniques, the students will see the application of the following equipment: -Digivision 1.3 megapixel USB digital optical microscope -Ocean Optics USB2000 + XR1 portable reflection UV-vis spectrophotometer with DH-mini UV-Vis-NIR source and reflection probe. The acquisition of MO images and of FORS spectra will be performed on pigments of some archeological ceramics, stones with and without a protective and on patina of metal alloys. The MO images of each artifacts will be discussed. Data analysis of FORS spectra will be illustrated. The colour parameters will be also calculated and some considerations about their meaning will be made.