the fraction or percent of a particular frequency or wavelength of electromagnetic radiation that is reflected from the surface of a substance without being absorbed or transmitted
(sol) The ratio of RADIATION reflected from a surface to that incident on the surface [See also: REFLECTIVITY (2)] F - facteur de reflexion S - reflectancia
Reflectance is the fraction of the total radiant flux incident upon a surface that is reflected and that varies according to the wavelength distribution of the incident radiation
A spectrum consists of a set of reflectance or transmittance values for the wavelengths scanned during a measurement The term "reflectance" is used if the amount of light is measured which is diffusely reflected by the sample This is mainly the case with solid samples
Also called reflectivity, this is the fraction of the light incident on a surface that is reflected Reflectance varies according to the wavelength distribution of the light
The ratio of the amount of light of a specified wavelength or series of wavelengths reflected from a test surface to the amount of light reflected from a barium oxide or magnesium oxide standard
Reflectance is the ratio of power reflected to the incident power at a connector junction or other component junction, usually measured in decibels or dB Reflectance is stated as a negative value, e g , -30 dB A connector that has a better reflectance performance would be a -40 dB connector or a value less than -30 dB The term return loss, back reflection and reflectivity are also used synonymously in the industry to describe device reflections, but stated as positive values