i+ . - G3 - Te eee ete eee een tame ah mE Se ee , Unit of dose equivalent. When the appropriate modifying factors are used to calculate dose equivalent one rem is the quantity of any type of ionizine radiation whicn when absorbed in man produces an effect equivalent to the absorbtion of one rad of X- or gamma-radiation at the place of interest. Rem: Q am cr Roen wean ne: The guantity of X- or gamma-radiation such that the associated corpuscular emission per 0.001293 grams of air produces, in air ions carrying one electrostatic unit of electricity of either sign. For the purposes here, the roentzen is roughly equivalent to the rad. Total radioactivity of a given material (isotope, element, or cozsound) car gr of the material -- curies/gran. Aboreviation for micron, which is cne- millionth of a meter Abbreviation Zo one-millionzn o Abbreviation for microgram, which is oneMillionth of a gran. oa