Definition - What does Solar Radiation mean?
Solar Radiation is the radiant energy (particularly electromagnetic energy) which is emitted by the sun. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum while the other half is mostly in the near-infrared part, with some in the ultraviolet part of the spectrum. The portion of this ultraviolet radiation that is not absorbed by the atmosphere causes sunburn to the human skin when the skin is exposed to it.
Petropedia explains Solar Radiation
There are many different forms of solar radiation. The electromagnetic spectrum explains the different types of light waves that are emitted from the sun. Light waves are similar to the waves an individual usually sees on the ocean - they move up and down and travel from one place to another. The difference is that instead of the light waves vibrating up and down like water waves they vibrate at different wavelength with different electromagnetic fields; hence solar radiation is also referred to as electromagnetic spectrum. Solar radiation has either low frequency or high frequency radiations.