Fundamental characteristics and application of radiation

Radiation is the emission or transmission of energy as waves particles through space a material medium which able to penetrate various materials and often categorized either ionizing non-ionizing depending on radiated particles. processing can be defined exposure with high radiation change their physical, chemical, biological characteristics, increase usefulness, safety purpose, reduce harmful impact environment. Ionizing produced by radioactive decay, nuclear fission, fusion, extremely hot objects, particle accelerators. The coming from sun due fusion; therefore, we are living in natural world. Radioactive substances common sources ionized that emit ?, ?, ? radiation, consisting helium nuclei, electrons positrons, photons, respectively. Alpha rays weakest form stopped paper. Beta pass paper but not aluminum. Gamma strongest radiation. They aluminum, thick block lead concrete. beta subatomic where gamma electromagnetic waves. This review presents fundamental introduction three types applications.