"Gas spectroscopy has been used to identify materials based on district line patterns emitted by excited molecules in the material." --IEEE: Electrical Insulation Magazine
1. Introduction 2. General Equations 3. Isolated Lines 4. Collisional Line-Mixing within clusters of lines 5. The Far Wings: beyond the impact introduction 6. Collision-induced absorption and light scattering 7. Consequences for Applications 8. Laboratory experimental techniques 9. Towards Future Research