1. Rotational spectroscopy
Spectroscopy uses the emission, absorption, and scattering of electromagnetic radiation to study atoms or molecules. Emission occurs when an atom or molecule loses energy by radiating light. Absorption is the reverse process.
In the case of scattering, electromagnetic radiation is deflected from its path when it interacts with matter. This interaction is different in nature from that observed and studied in emission and absorption spectroscopy and will not be discussed here.
The emission or absorption of electromagnetic radiation by matter can only occur at frequencies specific to that matter. The set of transitions observed between energy levels constitutes the spectrum of the system under study.
It represents, in a way, a characteristic fingerprint of the species under...
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Rotational spectroscopy
Fourier Transform Microwave Pulse Spectrometer FTMW
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