Understudy definition, to learn (a role) in order to replace the regular actor or actress when necessary. See more.
Radiation. radiation. (Science: radiobiology) propagation of energy through space. In the context of this report, it is electromagnetic radiation (x-rays or gamma rays) or corpuscular radiation (alpha particles, electrons, protons, neutrons) capable of producing ionisation.adiation. radiation. (Science: radiobiology) propagation of energy through space. In the context of this report, it is electromagnetic radiation (x-rays or gamma rays) or corpuscular radiation (alpha particles, electrons, protons, neutrons) capable of producing ionisation.
Radiation therapy, also called radiation treatment, is a form of treatment where high energy particles or waves, such as gamma rays, are projected onto the area of the body where cancer is present to destroy cancer cells. It is utilized in treatment of cancers such as breast cancer, lung cancer and head and neck cancer. It often follows surgery and chemotherapy, but may be given by itself. Radiation therapy is always delivered at a particular intensity and energy level.