The region of the electromagnetic spectrum (500 - 20 cm-1; 20 - 500 micrometers) that falls between the mid-IR and the microwave region. The far infrared (far-IR) region is well suited to the study of organometallic or inorganic compounds. It is useful in the identification and differentiation of many minerals and colorants.
Synonyms and Related Terms
far-IR; FIR; Ferninfrarot (Deut.); infrarouge lointain (Fr.);
Resources and Citations
- M.Derrick, D.Stulik, J.Landry, Infrared Spectroscopy in Conservation Science, in Scientific Tools for Conservation series, Getty Conservation Institute, Los Angeles, 1999
- Wikipedia: http://en.wikipedia.org/wiki/Far_infrared: lists FIR as 30 to 1000 microns