A Two-Wavelength Two-Frequency Ratio Recording Infrared Spectrometer Analyzer
- 1 September 1963
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 2 (9) , 969-973
- https://doi.org/10.1364/ao.2.000969
Abstract
An infrared plant stream analyzer is described which records as its output the ratio of two wavelengths; one the measuring and the other the reference wavelength. The two wavelengths are obtained by using two entrance slits in a grating spectrometer and chopping the radiation passing through each slit at a different frequency, permitting the use of electrical bandpass filters for wavelength separation and recording.Keywords
This publication has 1 reference indexed in Scilit:
- Application of Bichromator Infrared Dispersion AnalyzerIndustrial & Engineering Chemistry, 1954