Intensity of scattered radiation in the horizontal plane-includes scattered radiation in all directions.
Normal direct radiation intensity-this has nothing to do with the horizontal plane, indicating the direct radiation received on the plane perpendicular to the radiation direction. It also includes direct radiation reaching the plane from all directions.
The first one contains the second one.
The third one has nothing to do with the first two, but discusses different planes. Normal direct radiation intensity refers to the radiation power per unit area perpendicular to the radiation direction, which is generally very large.
How did you do in your primary school math exam? I want to sign up for a class during the holiday. Do you have any recommendations?
Not bad, al