The Specification of a Spectral Correction Filter for Photometry with Emission Photocells
- 1 September 1946
- journal article
- research article
- Published by IOP Publishing in Journal of Scientific Instruments
- Vol. 23 (9) , 211-216
- https://doi.org/10.1088/0950-7671/23/9/306
Abstract
An aqueous soln. of cupric chloride, cobalt ammonium sulfate and potassium dichromate is a useful filter for modifying the spectral response of certain types of emission photocells, so as to match the response of the standard (photopic) eye. A table of spectral densities for these solutions permits calculation of the combination required for correction of a given photocell.Keywords
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