In terms of natural radiation sources, there are more than 60 different naturally occurring radioactive materials present in the environment, with. Radiation is the emission of energy as electromagnetic waves or moving subatomic particles Natural radiation comes from many naturally occurring radioactive materials found in soil, water, air and in the body Every day, people inhale and ingest forms of radiation from air, food and water. We work to strengthen radiation protection of the public, patients and workers worldwide Ionizing radiation is radiation with enough energy that to remove tightly bound electrons from the orbit of an atom, causing that atom to become charged or ionized
Here we are concerned with only one type of radiation, ionizing radiation, which occurs in two forms There are several forms of electromagnetic radiation, which differ only in frequency and wavelength Who fact sheet on ionizing radiation, health effects and protective measures Includes key facts, definition, sources, type of exposure, health effects, nuclear emergencies, who response. À mesure que les usages des rayonnements ionisants se multiplient, les dangers qu’ils peuvent comporter pour la santé, s’ils ne sont pas correctement utilisés ou confinés, augmentent. Radiation exposure ionizing radiation exposure is measured as absorbed dose in gray (gy)
A dosis muy elevadas, la radiación puede alterar el funcionamiento de los tejidos y los órganos y producir efectos agudos como náuseas y vómitos, eritemas, caída del cabello, un síndrome agudo por radiación, lesiones locales (quemaduras por radiación) e incluso la muerte En las emergencias radiológicas y nucleares, las primeras personas en intervenir y el personal de la instalación. Among those who survived radiation sickness, recovery took several years Recent studies of the recovery operation workers indicate that opacities of the eye lens might result from radiation doses lower than previously expected (about 500 msv). 辐射是以电磁波或运动的亚原子粒子形式发射能量。天然辐射来自土壤、水、空气和体内存在的许多天然放射性物质。人们每天通过空气、食物和水吸入和摄入各种形式的辐射。 辐射暴露可能源自天然（如住房内的氡），由计划（医疗、职业）或意外情况引起。这种暴露也可能是通过外部途径.
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