Document Detail


On the colors of distant objects.
MedLine Citation:
PMID:  16201436     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Distant objects like clouds, mountains, and the Sun can appear to have colors that are significantly different from their intrinsic colors: the low Sun is often red, white clouds and snow-capped peaks appear yellow or pink, and dark green or gray mountains can appear blue or purple. The color alteration increases with distance, or alternatively, optical depth. We investigate the perceived colors of distant objects by computing the CIE chromaticity coordinates from their spectra. For sources viewed through significant amounts of atmosphere (e.g., the low Sun), MODTRAN4 radiative-transfer calculations are used to retrieve the spectra. In addition to clouds and mountains, the colors of stars, the Sun, and the sky are presented as a function of solar elevation under a variety of atmospheric conditions.
Authors:
David K Lynch; S Mazuk
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  44     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-10-05     Completed Date:  2005-11-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5737-45     Citation Subset:  -    
Affiliation:
Thule Scientific, 22914 Portage Circle Drive, Topanga, California 90290, USA. thule@earthlink.net
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