rotation spectrum

rotation spectrum

[rō′tā·shən ‚spek·trəm]
(physical chemistry)
Absorption-spectrum (absorbed electromagnetic energy) wavelengths produced if only the rotational energy of a molecule is affected during excitation.
References in periodicals archive ?
For measurements, a film was fixed vertically in the rotating cell of the spectropolarimetric cuvette--that is, perpendicularly to the incident beam of polarized light--and its optical rotation spectrum was recorded.