Fig. 2.15 Definitions for photometric studies of planetary surfaces with typical units
Fig. 2.16 The definition of radiance, I, at a point O in a direction at an angle of emission, e, with
respect to a surface element of area, dσ
56
2 The Nucleus
Fig. 2.16 The definition of radiance, I, at a point O in a direction at an angle of emission, e, with
respect to a surface element of area, dσ
56
2 The Nucleus