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Sievert
展望の宿 天神 2016 (26182596995)
Display of background radiation in a hotel at Naraha, Japan, showing dose rate in microsieverts per hour, five years after the Fukushima disaster.
Standard: SI derived unit
Quantity: Health effect of ionizing radiation (Equivalent dose)
Symbol: Sv
Named after: Rolf Maximilian Sievert
Expressed in: 1 Sv =
SI base units m2s−2
Energy absorbed by mass Jkg−1
CGS units (non-SI) 100 rem

The Sievert, abbreviated Sv is the SI unit to measure the equivalent dose of ionizing radiation. It looks at how an organism reacts to a given dose. This is different from measuring the total absorbed dose, which is done in gray. It is named after Rolf Sievert, a Swedish physicist and doctor, who did research on how radiation affects organisms.

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