We might call this medical imaging via X-ray, or taking an X-ray. The X-ray machine is aimed directly at the patient, and the incident radiation has a specific target on his/her body.
primary
primary radiation
Earth's land and sea absorb solar radiation, then reradiate it to the air
It is affected most directly by the suns radiation
The equator
In polar areas, solar radiation strikes Earth at a small angle. The dissipation of light in the Earth's atmosphere is increased when it falls at a shallow angle.
In polar areas, solar radiation strikes Earth at a small angle. The dissipation of light in the Earth's atmosphere is increased when it falls at a shallow angle.
sunlight
O2
ionizing
It can reflect, absorb or scatter off the object.
Small angles
IT is closest to the sun