The Spectroscopy of Supercooled Gases.

Discusses the process of using spectroscopy techniques for cooling gases below the normal temperature of condensation. Reference to how matter at certain frequencies is absorbed while others are not absorbed at all; Consideration of the process of measuring, analyzing, and interpreting the frequencies present in a molecular stream in order to investigate its physical properties; How analysis is sometimes impossible due to the complexity of the spectrum of a compound; Behavior of molecules at low temperatures which are required for high-resolution spectroscopy; Energy transitions associated with change in the rotational motion of a molecule; Possibility for a single photon to cause changes in more than one kind of energy state.