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The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Reflectance
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The reflectance of the surface of a material is its effectiveness in reflecting radiant energy. It is the fraction of incident electromagnetic power that is reflected at the boundary. Reflectance is a
Reflectance of smooth water at 20 °C (refractive index 1.333)
Reflectance of smooth water at 20 °C (refractive index 1.333)
Albedo
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Albedo is the fraction of sunlight that is diffusely reflected by a body. It is measured on a scale from 0 to 1. Surface albedo is defined as the ratio of radiosity Je to the irradiance Ee received by
Reflectance
…changes. Specular reflection is calculated by the Fresnel equations. Fresnel reflection is directional and therefore does not contribute significantly to albedo which primarily diffuses reflection. A liquid surface may be wavy. Reflectance may be adjusted to account for waviness…
Greenhouses of El Ejido, Almería, Spain
Greenhouses of El Ejido, Almería, Spain
The moon Titan is darker than Saturn even though they receive the same amount of sunlight. This is due to a difference in albedo (0.22 versus 0.499 in
The moon Titan is darker than Saturn even though they receive the same amount of sunlight. This is due to a difference in albedo (0.22 versus 0.499 in geometric albedo).