Abstract
A recording spectroradiometer has been constructed for use in absorption spectra measurements in the visible and near infra-red regions. A Hilger quartz monochromator and an emission type photoelectric cell are used. The photoelectric cell current is amplified by a d.c. amplifier and the output of the amplifier actuates a Leeds and Northrup Speedomax recorder which produces an inked record.
© 1938 Optical Society of America
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Simon Shlaer
J. Opt. Soc. Am. 28(1) 18-22 (1938)
V. K. Zworykin
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David L. MacAdam
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