reflectance

[ri-flek-tuhns]

noun

Physics, Optics.

1. the ratio of the intensity of reflected radiation to that of the radiation incident on a surface.

reflectance

/ rɪˈflɛktəns /

noun

1. ρ. 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 Compare transmittance absorptance

Word History and Origins

Origin of reflectance¹

First recorded in 1925–30; reflect + -ance

Example Sentences

They found that, contrary to intuition, the reflectance was highest when the individual particles were separated instead of when tightly packed.

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They trace these electrons by mapping out the "reflectance" of the sample, or the percentage of light they reflect.

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However, other studies have contradicted this by revealing a significant difference in reflectance spectra between Ryugu samples and CI chondrites.

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Although Galileo attempted to ascertain their composition using reflectance spectroscopy, it was unsuccessful.

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The techniques included X-ray fluorescence imaging spectroscopy and reflectance hyperspectral imaging, which uses a light-dispersing spectrometer to collect and process information from across the electromagnetic spectrum.

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