Spectroradiometry and Conventional Photometry: An Interlaboratory Comparison

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· U.S. Government Printing Office
Ebook
189
Pages

About this ebook

The report summarizes the results of a fluorescent lamp intercomparison carried out under the aegis of the National Bureau of Standards Photometry Section. The purpose of the intercomparison was to evaluate the interlaboratory precision obtainable in photometric and spectroradiometric measurements. The tests were also designed to disclose suspected systematic errors in measurement techniques. The intercomparison consisted of five parts: A homochromatic, photometric measurement of cool white fluorescent lamps and a heterochromatic, photometric measurement of a daylight fluorescent lamp and an incandescent lamp utilizing cool white fluorescent lamps as standards, all within an integrating sphere. Spectroradiometric measurement of the above mentioned lamps in an intergrating sphere. Spectroradiometric measurement of a 25 cm section of the fluorescent lamps in a baffled enclosure. An experiment designed to reveal systematic errors in heterochromatic photometry. Measurement of the x and y chromaticity coordinates with a Barnes colorimeter. (Author).

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