MEASURING THE BRIGHTNESS OF REFLECTIVE MATERIALS

"BRIGHTNESS" AND "REFLECTIVE MATERIALS" ARE TO BE DEFINED IN TERMS OF RETRO-REFLECTION, THE PROPERTY OF RETURNING RADIATION IN DIRECTIONS CLOSE TO THE DIRECTION OF INCIDENCE. TESTS TO MEASURE THIS PROPERTY MUST TAKE INTO ACCOUNT EYE SENSITIVITY, SPECTRAL COMPOSITION, AND REFLECTOR AREA. CALIBRATION IS ESSENTIAL FOR RELIABLE MEASRUEMENTS; STANDARDIZATION OF LIGHT SOURCES AND RECEPTORS FOR LABORATORY EQUIPMENT IS PARTICULARLY IMPORTANT IN THIS REGARD.

• Supplemental Notes:
  • Vol 41, No 10, PP 19-22, 4 FIG, 1 TAB
• Authors:
  • Harrington, T L
• Publication Date: 1971-7

Media Info

• Serial:
  • Traffic Engineering, Inst Traffic Engr

Subject/Index Terms

• TRT Terms: Measuring instruments; Reflectivity; Reflectorized materials; Retroreflection; Testing equipment
• Old TRIS Terms: Retrodirective reflection
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00226294
• Record Type: Publication
• Files: TRIS
• Created Date: May 22 1972 12:00AM