8 Terms
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Radiation hazards
Terms related to radiation and its hazards.
Industry: Environment
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Radiation hazards
effective half-life
Environment; Radiation hazards
The time required for the amount of a radioactive element deposited in a living organism to be reduced by 50% from the combined removal mechanisms of radioactive decay and biological elimination.
embryo
Environment; Radiation hazards
The developing human organism from conception until the time of birth. More specifically; embryo: 2 weeks (implantation) - 8 weeks; fetus : 8 weeks - term.
fetus
Environment; Radiation hazards
The developing human organism from conception until the time of birth. More specifically; embryo: 2 weeks (implantation) - 8 weeks; fetus : 8 weeks - term.
exposure
Environment; Radiation hazards
1) A measure of the ionization produced in air by x or gamma radiation. The unit of exposure is the Roentgen (R). 2) Being exposed to ionizing radiation or to radioactive material.
exposure rate
Environment; Radiation hazards
The amount of ionization in air caused by x-ray or gamma ray radiation per unit time; unit of measurement is the Roentgen per unit time (R/hr)
external dose
Environment; Radiation hazards
The portion of the dose equivalent received from radiation sources outside the body.
