What is Geometric albedo?
The '''geometric albedo''' of an [[astronomical]] body is the ratio of its actual [[Luminosity|brightness]] at zero [[Phase angle (astronomy)|phase angle]] (i.e. as seen from the light source) to that of an ''idealized'' flat, fully reflecting, [[diffuse reflection|diffusively scattering]] ([[Lambertian]]) disk with the same [[Cross section (geometry)|cross-section]]. The '''visual geometric albedo''' refers to the geometric albedo quantity when accounting for only [[electromagnetic radiation]] in the [[visible spectrum]]. {{physics-stub}} [[Category:Astrophysics]]