Preface -- Chapter 1 Spectroscopy Instrumentation -- 1.1 Introduction -- 1.2 Types of Spectrometers -- 1.3 Advantages of FT Spectrometers -- 1.4 Discussions on FT Spectrometer Advantages -- References -- Chapter 2 Signal-to-Noise Ratio -- 2.1 Signal-to-Noise Ratio Defined -- 2.2…