Relatively high ultraviolet absorptivity of most organics as compared to metal is suggested as basis for detecting traces of contamination. By photographing metal surface in ultraviolet light, contaminants that might otherwise interfere with adhesion of surface coatings, or with welding or brazing, could be detected and removed. Real time monitoring of cleaning process is also possible if ultraviolet sensitive television camera is used instead of photographic film.
Detecting contaminants by ultraviolet photography
NASA Tech Briefs ; 5 , 2
1980-09-01
Miscellaneous
No indication
English
Detecting Trace Contaminants in the Atmosphere
NTRS | 1986
|AERIAL PHOTOGRAPHY SYSTEM, AERIAL PHOTOGRAPHY METHOD, AND AERIAL PHOTOGRAPHY PROGRAM
European Patent Office | 2024
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