Definition of reflectance in English:

reflectance

Syllabification: re·flect·ance
Pronunciation: /riˈflektəns
 
/

noun

Physics
  • The measure of the proportion of light or other radiation striking a surface that is reflected off it.
    More example sentences
    • Instead it measured the diffuse reflectance, which is relatively independent of the angles of illumination and measurement.
    • The peculiar reflectance of infrared radiation by plants forms the main source of remotely sensed information about the biosphere on land.
    • So, given the measured reflectance and the predicted reflectance, one can calculate the contrasts of the collected species in the water.

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