Accession Number : AD0640578

Title :   A PROPOSAL FOR A SECONDARY STANDARD ILLUMINATION METER.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Marchgraber,R. M. ; Armstrong,R. W.

Report Date : AUG 1966

Pagination or Media Count : 22

Abstract : The design criteria for a filter combination that allows the conversion of a previously developed high precision caloric radiometer into a secondary illumination instrument are stated, and a technique for computing suitable filter combinations and their errors is discussed. It is shown that a combination of two Schott filters (GG 10 and KG3) yields a technologically feasible solution which deviates only about one percent from the response of the normal human eye for air masses 1 through 5. (Author)

Descriptors :   (*ILLUMINATION, MEASURING INSTRUMENTS), METEOROLOGICAL INSTRUMENTS, SOLAR RADIATION, RADIOMETERS, OPTICAL FILTERS

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE