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The two letters Sv, the SI unit symbol for the sievert.
Sv is the SI symbol for the sievert, the derived unit of dose equivalent — absorbed radiation weighted for its biological effect. Everyday exposures are quoted in millisieverts and microsieverts.
Denotes the sievert, the SI derived unit of dose equivalent.
Contexts: Mathematics
Weights absorbed energy by the kind of radiation delivering it, so it estimates biological harm rather than raw energy deposited — which is what makes it the unit used for exposure limits and medical dose reporting.
Contexts: Medicine
Is a large unit for everyday purposes, so exposures are almost always quoted as mSv or µSv: a chest radiograph is a fraction of a millisievert.
Contexts: Medicine
A capital Latin S drawn as a double curve, followed by a lower-case v of two short diagonal strokes meeting at a point on the writing line.
The becquerel counts decays; the sievert estimates the harm a dose does.
The trefoil warns that a source is present; the sievert quantifies exposure to it.