A variation of this technique uses signal averaging to improve signal-to-noise through Jacquinot’s advantage. Detectors made of DLATGS are found in devices for this technique, which often uses matrix isolation. A variant of this technique often paired with ATR generates data in the form of interferograms. (15[1])Holding up two, three or four fingers is a common mnemonic when analyzing aromatics in this technique. Rows that contain x, y or z in a character table correspond to this technique. A (*) potassium bromide disk or Nujol (“NEW-jull”) mull (10[2])can be used to prepare samples for this technique. This technique observes changes in dipole moment due to molecular (10[1])vibrations, and identifies functional groups in the fingerprint region. For 10 points, name this spectroscopic technique named for radiation with a wavelength (10[1])longer than visible light. ■END■