Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. analysis and testing techniques
6. spectroscopy

Anotations

Scope note:

Method of infrared spectroscopic analysis that measures the ways a molecule can vibrate. Radiation is passed through a sample and its absorption is detected in terms of characteristic frequencies associated with normal modes of vibration of molecules.