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What is Reflectance?

Encyclopedia
Field: Industry News
Electrical Engineer
10Year<
China


What is Reflectance?


Reflectance Definition


Reflectance is defined as the ratio of the radiant flux reflected from a surface to the incident radiant flux, and it is unitless.



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Types of Reflectance


  • Specular (mirror-like)

  • Diffuse (scattering)


 

Reflectivity Definition


Reflectivity is the property of a material to reflect light or radiation and remains consistent regardless of the material’s thickness.


 

Reflectance Measurement


Reflectance can be measured relatively using a reference plate or absolutely by comparing to the light source.



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Solar Reflectance Index


This index indicates a material’s ability to reflect solar energy, ranging from 0 to 1.



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