Answers are grounded in this paper and cite their sources.
The dependence of frequency ν on the setting T of an infrared prism spectrometer can be given by the formula ν(T) = A(T) + B/(C − T) with a small variation of the parameter A. For prisms in their lowest octave of transmission the variation in A is 10 cm−1 for NaCl, and 2.5 cm−1 for KBr and CsI. For a KBr prism in a double-pass instrument enough atmospheric absorption lines are resolved to give adequate reference data for calibration without using any other gas. Frequencies for this purpose are given.
No takes yet. Share an insight, caveat, or question.
Filler et al. (1961) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: