This question came due to and explanation in my son's instruction material for his 5th grade science studies: Is it scientifically correct to say that sunlight which reaches the earth's surface at a low angle (as in during wintertime) is "indirect sunlight"? Sunlight is considered direct if the sun is overhead and the angle of incidence is high (close or at 90 degrees), but is low angel sunlight just less direct as opposed to indirect? I think of indirect sunlight as reflected or dispersed sunlight.
