Current Status of Internal Reflectance Spectroscopy

  • Paul A. WilksJr.


The first applications of frustrated multiple internal reflectance or attenuated total reflectance to infrared spectroscopy were reported by Harrick (1) and Fahrenfort (2) in 1959. Because their work was done independently, the two different terminologies have been used in the literature and a certain amount of confusion has resulted. It should be understood that both FMIR and ATR refer to the same phenomenon; the more general term “Internal Reflection Spectroscopy” will be used in this discussion.


Refractive Index Critical Angle Internal Reflection Quantitative Accuracy Wavelength Side 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    Harrick, Annals of New York Academy of Sciences. Vol. 101, Art. 3, Pages 928–959. 1963. CrossRefGoogle Scholar
  2. 2.
    Fahrenfort, Spectrochemica Acta, Vol. 17, Pages 698–709. 1961. CrossRefGoogle Scholar
  3. 3.
    Harrick, “Internal Reflection Spectroscopy,” Interscience, New York. 1967. Google Scholar
  4. 4.
    “Internal Reflection Spectroscopy,” Vol. 1. Wilks Scientific Corporation. 1965. Google Scholar

Copyright information

© Plenum Press 1968

Authors and Affiliations

  • Paul A. WilksJr.
    • 1
  1. 1.Wilks Scientific CorporationSouth NorwalkUSA

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