n. the *SI unit of capacitance, equal to the capacitance of a capacitor between the plates of which a potential difference of 1 volt appears when it is charged with 1 coulomb of electricity. Symbol: F.... farad
n. a unit of exposure dose of X- or gamma-radiation equal to the dose that will produce 2.58 × 10?4 coulomb on all the ions of one sign, when all the electrons released in a volume of air of mass 1 kilogram are completely stopped.... roentgen
Health Encyclopedia