Molecular Spectroscopy: Absorption and Emission

This lecture covers the principles of molecular spectroscopy, focusing on the absorption and emission of electromagnetic radiation by molecules. It explains how spectroscopy is crucial for determining molecular structure and identifying molecules based on their light absorption. The lecture delves into the interpretation of molecular spectra, the Schrödinger equation for molecules, and the quantification of energy levels. It also discusses the differences in molecular spectroscopy between gas phase and solution phase, emphasizing the impact of molecular environment on spectral lines. Additionally, it explores vibrational spectroscopy, including the resolution of the Schrödinger equation for harmonic oscillators and the quantization of energy levels.