1. Their absorption peaks at ~ 630 nm and luminescence at ~ 650 nm. 2. The absorption peak steers the fly-wheel oscillator. 3. Water in the liquid state possesses many molecular interactions that broaden the absorption peak . 4. These excitations result in excited state absorption peaks located below the diagonal and cross peaks. 5. The problem with plastic in IR is that it has a lot of absorption peaks . 6. These crossover peaks can be quite strong, often stronger than the main saturated absorption peaks . 7. :Try infrared spectroscopic analysis, alkynes gives an absorption peak at a higher wave number. 8. :: I think most of the difference is with resonant absorption peaks of liquid water. 9. It can be distinguished from other ambers via IR spectroscopy due to a specific carbonyl absorption peak . 10. Lipids can be imaged at near-IR wavelengths, with the absorption peak occurring at 930 nm.