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 is the TRANSFER of HEAT in the form of ELECTROMAGNETIC WAVES that DIRECTLY transport ENERGY through SPACE. RADIATION HEAT TRANSFER is TEMPERATURE DEPENDENT, to the FOURTH POWER, and can occur WITHOUT a MEDIUM. A BLACK BODY is DEFINED as a BODY that ABSORBS all ENERGY incident upon it.