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PUBLICATIONS SPONSORED BY THE FASTNESS TESTS CO‐ORDINATING COMMITTEE'XIV: The Use of Fading Lamps for Determining Light Fastness
Author(s) -
MoLaren K.
Publication year - 1954
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1954.tb02010.x
Subject(s) - fading , relative humidity , daylight , spectral composition , moisture , spectral properties , environmental science , water content , composition (language) , meteorology , telecommunications , optics , computer science , chemistry , engineering , physics , art , geotechnical engineering , literature , decoding methods , computational chemistry
There are three possible causes of the Significant differences sometimes experienced between fading lamp and daylight fastness figures' spectral composition, temperature, and moisture content. Although there are marked differences between the spectral composition of fading lamps and sunlight, on theoretical grounds these would not appear to be the main cause of large discrepencies. The most likely cause is surface moisture content during exposure, and this depends on surface temperature and on the relative humidity of the surrounding air. It will be necessary to investigate these factors in detail before a specification for fading‐lamp operation can be issued.