nuclear radiation occurs in three ways alpa beta and gamma alpha is the least penetrating,while gamma is the most penetrating radiation can be adsorbed by substances in its path for example alpa radiation travels only a few centimeters in air beta radiation travels tens of centimeters in air while gamma radiation travels many metersall types of radiation become less intense the further the distance from the radioactive material as the particles or rays become more spread out the thicker the substance he more the radiation is adsorbed
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