Confusion and/or difficulty speaking clearly or coherently (not making any sense). 1  Fainting â Syncope. 2  Fainting from a heart rhythm disorder is more likely to happen suddenly and without warning than Fainting from other causes, such as dehydration or low blood sugar.
Radio waves, gamma-rays, visible light, and all the other parts of the electromagnetic spectrum are electromagnetic radiation. Electromagnetic radiation can be described in terms of a stream of mass-less particles, called photons, each traveling in a wave-like pattern at the speed of light.
Solar radiation. Solar radiation is radiant energy emitted by the sun, particularly electromagnetic energy. About half of the radiation is in the visible short-wave part of the electromagnetic spectrum. The other half is mostly in the near-infrared part, with some in the ultraviolet part of the spectrum [1].