The sievert (symbol Sv) is an SI derived unit of radiation dose. It is defined as the dose received in one hour at a distance of 1 cm from a point source of 1 mg of radium in a 0.5 mm thick platinum enclosure. It is approximately equivalent to 8.4 röntgens or 21.6 curie/kilogram.
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... (783.9/mi²). The racial makeup of the village is 89.17% White, 4.63% African American, 0.42% Native American, 1.16% Asian, 0.05% Pacific Islander, 2.84% from othe ...