Coblentz

A computer file of about 19,000 peak wavenumbers and intensities, along with search software, is distributed by the Infrared Data Committee of Japan (IRDC). Donated spectra, which are evaluated by the Coblentz Society in coUaboration with the Joint Committee on Atomic and Molecular Physical Data (JCAMP), are digitized and made avaUable (64). Almost 25,000 ir spectra are avaUable on the SDBS system developed by the NCLl as described. A project was initiated at the University of California, Riverside, in 1986 for the constmction of a database of digitized ftir spectra. The team involved also developed algorithms for spectra evaluation (75). Other sources of spectral Hbraries include Sprouse Scientific, Aston Scientific, and the American Society for Testing and Materials (ASTM). 

Tech-nical Information Coblentz Society-JCAMP ir 4,400 PC-based ... 

C. D. Craver, Infra-Red Spectra of Plasticicyers and Other Additives, 2nd ed.. The Coblentz Society, Kirkwood, Mo., 1980. 

C.D. Craver (ed.), Infrared Spectra of Plasticizers and Other Additives, The Coblentz Society Inc., Kirkwood, MO (1982). 

W.W. Coblentz, Investigations of Infrared Spectra Part 1. Publication No. 35, Carnagie Institute of Washington (1905). 

Since 1905, when Coblentz obtained the first IR spectrum, vibrational spectroscopy has become an important analytical research tool. This technique was then applied to the analysis of adsorbates on well-defined surfaces, subsequently moving towards heterogeneous reaction studies. Terenin and Kasparov (1940) made the first attempt to employ IR in adsorption studies using ammonia adsorbed on a silica aerogel containing dispersed iron. This led to a prediction by Eischens et al. from Beacon Laboratories in 1956 that the IR technique would prove to be extremely important in the study of adsorption and catalysis. For an excellent review article in IR spectroscopy, see Ryczkowski and references therein and for a more recent review with applications, see Topsoe. ... 

Yellow or Nankin-colored earthenware, composed of grey plastic clay from Vallendar, near Coblentz, and clay from Eifol, which bums yellow, The glazo contains lead,... 

In experiments with proustite, Ag3AsS3, Coblentz observed 3 that at temperatures from +20° to -50° C. the spectrophotoelectricsensitivity curve showed a slight maximum at about 6100 A. and a marked sensitivity with a maximum in the extreme violet. As the temperature is lowered to -100° C. the maximum in the violet is more or less obliterated by a new maximum (the 6100 A. band) which occurs at about 5800 A. The position of this new maximum remains quite constant as the temperature is further lowered to -170° C. No photoelectric sensitivity is observed for radiation stimuli of wavelengths extending from 10,000 to 20,000 A. in the infra-red. 

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