: Reflectance under completely diffuse (cloudy) light.
Understanding Albedo: The Earth's Reflective Shield is a measure of the diffuse reflectivity of a surface, specifically indicating the fraction of incident solar radiation that is reflected back into space. It is a dimensionless quantity expressed on a scale from 0 to 1 (or 0% to 100%): Albedo
: The total fraction of incident electromagnetic energy scattered back into space by a planet or moon across all wavelengths and angles. : Reflectance under completely diffuse (cloudy) light
: A "black body" that absorbs all incoming radiation. Albedo