Abstract:
THE SUBJECT MAY BE DIVIDED INTO THREE PHASES: (1) ESTABLISHING EVALUATION CRITERIA, (2) DEVISING INSTRUMENTATION, AND (3) FORMULATING MEASUREMENT TECHNIQUES AND STANDARDS. THE POSSIBLE EVALUATION CRITERIA HAVE BEEN REVIEWED AND THE SMOKE CRITERION SELECTED WAS THE REDUCTION IN VISIBILITY RATHER THAN THE ANNOYANCE, DISCOMFORT, OR NUISANCE ASPECTS. VISIBILITY IS SHOWN TO BE RELATED TO BRIGHTNESS RATIOS AND CONTRASTS. AN INSTRUMENT FOR MEASURING BRIGHTNESS RATIOS AND CONTRASTS HAS BEEN DESIGNED AND A WORKING MODEL HAS BEEN CONSTRUCTED AND CALIBRATED. PRELIMINARY FIELD DATA ARE SHOWN FOR SEVERAL SETS OF SMOKE CONDITIONS. THE PLAN FOR A COMPLETE STUDY IS OUTLINED TOGETHER WITH SUGGESTIONS FOR TECHNIQUES FOR FIELD MEASUREMENTS AND STANDARD DEFINITIONS. /AUTHOR/
Supplemental Notes:
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