Question

what are the two components of solar radiation that are not visible to us

Answer 1

ultra-violet rays and gamma rays are the two components of solar radiation that are not visible to us.

Answer 2

Ultraviolet C or (UVC) range, which spans a range of 100 to 280 nm. The term ultraviolet refers to the fact that the radiation is at higher frequency than violet light (and, hence, also invisible to the human eye). Due to absorption by the atmosphere very little reaches Earth's surface.