The term radiation in physics refers to the release and circulation of energy through space or material medium. (Faiz, 2). Radiation can also be described as energy traveling in the form of particles or waves in bundles of energy called photons
Radiation can be classified as either environmental or artificial. Environmental radiation is natural occurring and includes cosmic rays and radioactivity. Artificial radiation on the other hand is in one way or another manipulated by humans or human activity and includes gamma rays, x-rays, e.t.c.
Further classification of radiation can be done through the particles interactions with normal chemical matters i.e either ionizing or non-ionizing. Mainly, radiation is associated with its ability to have sufficient energy to ionize an atom i.e ionizing radiation.
Both forms of radiation can cause harm to the living organisms and the environmental at large though ionizing radiation is more harmful. Some everyday application of radiation includes the microwaves used to cook food, radio waves for radio and television, light, and x-rays used in hospitals. Prolonged exposure to radiation can cause life changing problems to the human DNA and caution must be used in cases of exposure to radiation especially the ionizing radiation.
The high energy emitted during ionization is so intense that when the radiation interacts with materials, it can remove electrons from the atom in the material. The reason as to why ionizing radiation is harmful to health.