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The ratio of the total amount of radiation, as of light, reflected by a surface to the total amount of radiation incident on the surface.


(rɪˈflɛktəns) or

reflection factor

(Units) a measure of the ability of a surface to reflect light or other electromagnetic radiation, equal to the ratio of the reflected flux to the incident flux. Symbol: ρ Compare transmittance, absorptance


(rɪˈflɛk təns)

the ratio of the intensity of reflected radiation to that of the radiation incident on a surface.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.reflectance - the fraction of radiant energy that is reflected from a surface
coefficient - a constant number that serves as a measure of some property or characteristic
References in periodicals archive ?
Near UV and visible electromagnetic radiation have significant influence on filter paper made only from virgin fibres without any additives (calcium carbonate, clay, dye, starch, pigment) decrease reflectance value of those papers, especially in blue part spectra.
Reflectance is the ratio of light that radiates onto a surface to the amount reflected back.
A high reflectance over a broad spectral range of 250-2500 nm increases optical efficiency.
When Landsat-type images are concerned, a logical way is to transform all images into surface-level reflectance factor units.
Over the lifecycle of the pavement, the pavement material matters substantially more than the pavement reflectance," explains Ronnen Levinson, a researcher in Berkeley Lab's Heat Island Group.
Part one of our study explores how tornadoes affect the reflectance and commonly used indices derived from reflectance, such as the Normalized Difference Vegetation Index (NDVI) and the Tasseled Cap indices of brightness, greenness, and wetness, when comparing damaged forest, grassland, and urban land cover.
Within this context, the objective of this study was to characterize the variability of spectral reflectance and temporal profiles of vegetation indices associated with nitrogen fertilization, crop cycle periods, and predominating weather conditions during the winter canola growing season in southern Brazil.
Solar reflectance values are typically >80% for coatings formulated specifically as "cool" roof paints, which means they absorb and/or transfer <20% of the incident energy.
The chlorophyll content was shown to increase gradually and continuously, regardless of trends in leaf reflectance.
The 850 model is reportedly the only truly close-tolerance spectrophotometer for both reflectance and transmission measurement, ensuring customers can confidently communicate color digitally throughout their supply chain.
2014) proposed a new spectral ratio index in the near infrared (NIR) shoulder region (NSRI), defined by a simple ratio of reflectance at 890 nm to reflectance at 780 nm, for assessing leaf structure deterioration.
This microstructure has been found to transform a transparent film into an opaque film with high diffused reflectance.